Yes. The Android phones don't come with "starter" minutes, so you'll need to add some airtime to activate. You can buy on Tracfone web site a 30-minute/30-day card for $9.99. That will give you 90 talk minutes, 90 text units, and 90Mb of data. Plentiful for checking it out. You can port over your phone number later. This phone doesn't use a SIM, so number porting is easy. I get 3-4 bars on my phone at home, have never got a dropped call with it.
If you're asking about not sending your phone number for caller ID, dial *67 and the phone number that you want to call. On the recipient's phone, it'll display "Private", "Anonymous", or "Restricted".
Some phones have that problem. Try removing the battery, wait about 10 seconds, put the battery back in and power it up. If you have to do that often, contact Tracfone or the seller for a replacement. There's a 1-yr warranty against defects.
Replacing the memory card shouldn't cause that problem. At power-up, the phone just recreates some Android folders that it needs. The only thing that will be missing are any files (apps, photos, music..) that you stored on the old card and didn't copy over. Try removing the battery WHILE POWER IS ON, wait about 10 seconds, reinstall the battery and power up the phone.