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705 of 729 people found the following review helpful
5.0 out of 5 stars The Unu DX-1700 is a MUST for professionals on the go!
Customer Video Review     Length:: 7:14 Mins
I don't normally write too many reviews but I had to write something about the Unu DX-1700. I've spent a great deal of time doing cross comparisons of different battery cases on the market before I settled on the Unu. There is relatively very little information on the web about the unit so I figured I'd help out buyers like me who like to...
Published on December 4, 2011 by Turika

versus
100 of 120 people found the following review helpful
3.0 out of 5 stars Not bad for the price
I bought 5 of these, 3 white & 2 black. I've had about 10 different battery packs for all generations of the iPhone except the 1st one. I'm a heavy user with podcasts, games, foursquare, facebook, google maps, etc. and I've had the uNu battery pack for about a month. Compared to the Mophie Juice Pac Plus:
- Much cheaper at US$35 vs. US$100
- While the...
Published on January 28, 2012 by L. Kwok


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705 of 729 people found the following review helpful
5.0 out of 5 stars The Unu DX-1700 is a MUST for professionals on the go!, December 4, 2011
Verified Purchase(What's this?)
This review is from: UNU Power DX External Protective Battery Case for iPhone 4s/4 - Retail Packaging - White (Wireless Phone Accessory)
Length:: 7:14 Mins

I don't normally write too many reviews but I had to write something about the Unu DX-1700. I've spent a great deal of time doing cross comparisons of different battery cases on the market before I settled on the Unu. There is relatively very little information on the web about the unit so I figured I'd help out buyers like me who like to research the item before they commit to buying. So here goes:

The Good:
1. The Unu is attractively priced. Many other battery cases range anywhere from $60 - $80 which is way out of my price range for this type of product.
2. The Unu looks good. I've got a white iPhone 4 (Verizon) and a majority of the battery cases out there are black. Also, the Unu has a nice, glossy finish which compliments the iPhone.
3. It works. I can go an entire day (13 hours) without recharging my phone, and that includes web surfing, sending/reading emails, and of course playing games.

The Bad:
1. The Unu does add some considerable bulk to your slim iPhone. Both in thickness and in height.
2. The Unu adds extra weight (mainly from the battery) so throwing it in your pockets may be uncomfortable.

Bottomline:
It's a quality battery case that works well, compatible and reliable, and is relatively inexpensive. There are negatives, but they're all superficial. If you're a person who is always on the go and you don't always have time to charge your phone then this case is for you. I've had my Unu for nearly 4 months, and it has saved me on many occasions, particularly last week when heavy winds knocked down all the electrical lines and our neighborhood had no electricity for 3 days. Outstanding product - gets 8 out of 10 stars from me.
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189 of 211 people found the following review helpful
5.0 out of 5 stars Cost Effective Alternative, July 30, 2011
Verified Purchase(What's this?)
I was delighted to discover these little gems were still offered by Amazon, and at a slightly reduced price from the first one I purchased a year ago.

Back then, when the iPhone 4 was first released, there weren't many "power case" options available. I found this one, freshly listed by an unknown-to-me seemingly Chinese company and I hesitated. Long enough for someone else to leave a review. (Thanks Crispin38!) After all, I frequently haunt the "wholesale direct" websites and the quality often leaves much to be desired.

When that first review arrived and it was positive, that was good enough for me to take a chance and keep my fingers crossed, and am I ever glad I did.

Mechanically, the case fits rock solid. No gaps or sloppy contact points along the seams, and the snap-together closure seats firmly into place. The end result is a trim, slightly thicker than before phone which fits confidently in my grip, with no slippery or "too thin" sensation. Turned to landscape mode for two-thumbs typing, the size is just right for my large hands to reach any key present.

Electronically, the case delivers pretty much as promised, so long as you explicitly follow the manufacturer's admittedly sparse instructions. Unu presents this case as a "recharger," rather than an ongoing power supply, meaning that they recommend turning the device on only after the phones internal battery is depleted. Used in that fashion, the case consistently recharges the phone battery from 20% to 100% every time, though the "power low" warning light starts flashing at around 85% or so.

However, it occurred to me to go against the manufacturer's recommendations and use the case as an alternative power source, thereby saving the iPhone's internal battery from the inevitable charge cycle failure. After all, $50.00 is a lot less expensive than what Apple charges to replace a failed phone battery. :)

Thus, I charge the case up each night and it lasts through most of the next day, powering the phone though an "average" day of voice calls, network and cellular surfing, playing music, any number of apps being run, and perhaps a few YouTube videos. By the end of the day, the low power warning is either blinking or given up altogether, but by then I am home and the phone is more or less docked or corded for the night. Remember that this kind of usage is *opposite* the manufacturer's suggested application and your mileage may vary, not to mention probably being contrary to it's warranty. For me, I have no problem with that because a year after having purchased the iPhone 4, it's internal battery is still capable of delivering a charge time comparable to when it was brand new.

As specified, syncing and simultaneous charging work without incident or effort, and I've never had an occasion where an OS upgrade failed simply because I synced through the case, unlike the failures I am sure to get using certain third party cables.

As a bonus, and an additional reason I am so glad to see them still available is the flat top, bottom, and sides of the case's styling. This allows me to use the phone with any of the clinometer or "carpenter's level" type apps and never have to take the phone from its protective case. In fact, the "softened square" style of the case, and its ability to charge the phone when connected to a portable power source (the i.Sound Portable Power Max with 16,000 mAh for iPod, iPad, iPad2, iPhone, Droid, and Blackberry in this case) allowed me to build the old case directly into a self-powered video tripod system which allows me to literally shoot all day long without interruption.

If you're on the fence about this baby, because of the poorer reviews or just because you've never heard of Unu, jump down, read the instructions, and grab it anyway. There really IS an on/off switch and it works flawlessly. Plus, if you happen to be unlucky enough to get the inevitable "lemon" inherent with any mass produced appliance, Amazon's refund/exchange policy works, and this jewel is worth the extra effort to exchange it and get a good one. :)
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107 of 126 people found the following review helpful
5.0 out of 5 stars Impressive!, March 28, 2011
By 
Verified Purchase(What's this?)
This review is from: UNU Power DX External Protective Battery Case for iPhone 4s/4 - Retail Packaging - White (Wireless Phone Accessory)
I was hesitant to try this knockoff batt case... but trusted the other review on here. It is very sturdily built and provides lots of boost. I love the sync passthrough that is only available on the cases that cost double and not on other alternatives. The only two drawbacks I've found are the added weight/bulk (duh.. to be expected) and you cannot use the camera with flash at night inside this case. It reflects off the white and blurs out the picture. Really not a deal breaker for me.

I cannot suggest this case enough as an alternative to the higher priced cases. Love it for the weekends when I am not around power all the time. This case holds my VZW iPhone 4 at 100% for at least 24 hours with heavy usage... plus then I have a full iPhone batt after that!

9/10 :)
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100 of 120 people found the following review helpful
3.0 out of 5 stars Not bad for the price, January 28, 2012
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Verified Purchase(What's this?)
I bought 5 of these, 3 white & 2 black. I've had about 10 different battery packs for all generations of the iPhone except the 1st one. I'm a heavy user with podcasts, games, foursquare, facebook, google maps, etc. and I've had the uNu battery pack for about a month. Compared to the Mophie Juice Pac Plus:
- Much cheaper at US$35 vs. US$100
- While the dimensions are about the same as the Mophie, it feels bigger. Maybe it's because the Mophie has rounded edges & this one is angular
- While it's advertised as 1700 mAh, it feels like less. More like 1200. After charging all night, the Juice Pac plus (2000 mAh) can last me more or less till when I get off work before the iPhone's battery indicator starts to go below 100%. With the uNu, it goes below 100% at about lunch time. Maybe it's the chemistry.
- The micro USB connection is stronger than the Mophie. The reason I'm trying the uNu is because I've broken 3 Mophies. I would invariably knock the iPhone off the table while it was charing and snapped the Mophie's micro USB connector after which the Mophie would not charge. What a waste of US$100 x 3. I've continue to knock my iphone off the table & so far, so good.
- the micro USB cable it comes with is crap - I broke mine when it bent just a little.
- The case is good protection same as the Mophie - my iPhone 4S was knock out of my hands on to the sidewalk (I was 4squaring) and it bounced on the concrete. The uNu's upper left corner is cracked but the iPhone is fine. The battery still works great.

The big Mophies & the longest lasting battery packs I've had (I had one that had a solar back recharger) usually lasted me about 6 months before they would stop taking a charge. Will report back when this one dies. I suspect this is 1/3 the price partly because it won't last as long.
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142 of 175 people found the following review helpful
5.0 out of 5 stars uNu DX-1700 battery case: excellent product!, March 22, 2012
Verified Purchase(What's this?)
Length:: 7:08 Mins

My review for the uNu DX-1700 battery case. For the video-impaired, it is an excellent product and I really enjoy having it! In this video I go through how it works and my experience with it so far. I hope you enjoy it!
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83 of 102 people found the following review helpful
5.0 out of 5 stars This thing rocks!, October 21, 2010
Verified Purchase(What's this?)
If you're on the fence about this case... just buy it. I had the mophie and the mili battery case for the Iphone 4... but they both sucked compared to this case. This case wont scratch like those others due to the soft touch of the case. It lasts longer and is soooo much cheaper. It will recharge your iphone 4 about 75% of the way back. I know it says 1700mAh but the mili and mophie are like 1500mAh and will only give you about 40-60% recharger... so this case is defiantly better in terms of power. The feel is great! The only problem and it's not really a problem is the case is not really really snug... I mean you can't tell if you look at it and it doesnt slide around in the case but you could defiantly have a protective film on the iphone and still get it in the case.... I HAVE HAD NO PROBLEMS WHAT SO EVER! I would buy it again 10x over.
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36 of 43 people found the following review helpful
5.0 out of 5 stars Nicely designed, September 29, 2010
Verified Purchase(What's this?)
Edit:- Upgraded review from 4 to 5 stars - after 2 weeks this case is performing excellently and I am very satisfied with this purchase. I would strongly recommend this case to anyone who uses their iphone 4 extensively throughout the day and needs the extra battery capacity.

Happy with this purchase so far.

I have used Mophie on my old 3GS and was underwhelmed with construction and ended up returning it due to broken toggle switch.

uNu case is nicely designed, feels solid, fits well, has pleasant soft rubber coating, two pieces snap together solidly and case has no garish logos.

Cell reception is a little attenuated by the case but that is pretty usual for battery cases, nothing too extreme though (one bar in weak reception areas).

On/off toggle switch works well with 4 LED charge indicators. All iPhone controls are accessible if a little more cramped (esp. sleep/wake switch) but nothing like Mophie that required removing case to toggle mute switch (!!).

Provides almost a full recharge for a dead phone.

Usual problem of microUSB connector instead of Apple 30-pin dock requires different cables (comes with one cable, extras can be bought cheaply online) and removing case for accessories such as iHome.

Positives:-
Well made, comfortable
Cheaper than alternatives
Fits iphone 4 well
Cable charges case & phone at once
iPhone syncs OK with PC with case on
Good capacity

Negatives:-
Adds bulk (I don't mind, actually easier to hold)
Doesn't use Apple cable
Reduces reception slightly
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21 of 25 people found the following review helpful
4.0 out of 5 stars ALMOST A FIVE STARS EXPERIENCE*****, January 2, 2012
Verified Purchase(What's this?)
This review is from: UNU Power DX External Protective Battery Case for iPhone 4s/4 - Retail Packaging - White (Wireless Phone Accessory)
Yes, almost a five star experience!! The product was delivered in the date indicated. It does exactly what it's supposed to do: easy to insert the phone in and out, white with a beautiful glossy finish that will keep the originality of the phone color -In my case, I want my phone looking white as I bought it and the color match is perfect!!, it will protect your phone from hits and scratches, will recharge the battery pretty quick and will give you good hours of usage once the original battery runs out. Easy to use with LED insicator lights. The only reason I gave it a four star review is because if you need to take a picture at night when camera flash is needed, it will create a white shadow/glare into the photo and will force you to take the phone off the case to prevent that from happening (bad engineering). I contacted UNU/Amazon via email regarding the issue; Jason, a representative immediately replied back apologizing for the inconvenience and saying they are aware of the problem and they are working on a new design that will correct this problem. He also compromised to send me a replacement once it's available.
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40 of 50 people found the following review helpful
3.0 out of 5 stars The good/ the bad, October 31, 2011
Verified Purchase(What's this?)
This review is from: UNU Power DX External Protective Battery Case for iPhone 4s/4 - Retail Packaging - White (Wireless Phone Accessory)
Good:
-Nice looking case glossy white(slippery at times though)
-great protection for phone
-Charges my phone to full if I turn it on with 30% on my iphones battery left
Bad:
-Nonstock headphones/AUX jack cable will not fit do to opening on it not wide enough to seat the connector all the way down
-Flash reverberates of case and ghosts the images of your phone (low light where flash is required)
-The USB connector on the bottom vice apple connector(I have a Hyundai Elantra with a apple cable that if I want to use I have to take the case off to use with my phone.
-Instructions kinda sketchy seems like they were google translated from the original language.

Overall its not a great case but it does the job.
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21 of 25 people found the following review helpful
5.0 out of 5 stars Excellent battery case and excellent price!, July 5, 2011
Verified Purchase(What's this?)
This review is from: UNU Power DX External Protective Battery Case for iPhone 4s/4 - Retail Packaging - White (Wireless Phone Accessory)
This case looks great with my white iPhone, it is sleek and really does not weigh that much considering the extra battery. It has led indicator to tell you how much charge is left in the case and you can turn the charging battery on and off so it's not constantly charging your phone, but is there when you need it. It is easy to put on and take off and does not look big and clunky like a lot of the battery cases do. For the price, it is a great buy! I definitely recommend it, I have not found any cons with this case, all pros.
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