(Posted an edited copy of a fellow pillar's post from the Sensation forum)
Your options are as follows:
- Try some basic troubleshooting tips. Most are in the documentaion area. Others you can find via searching in this forum for your issue and seeing what others have tried. Try a battery pull (pulling the battery and putting it back in). Try a factory reset (aka hard reset). Try clearing all of your caches (browser, apps). Try a new SIM Card. Try a new MicroSD card.
- If you say you've already tried point #1 a thousand times over, you are part of a group that simply can't get the G2x to run well in its stock configuration, and you have to try one of the other options below.
- You can ask T-Mobile to let you try another G2x, but if you're already on your 2nd or even 3rd G2x or higher, don't waste your time getting yet another replacement, continue to the other options below.
- If you are still within the 14 or 30 day return window, get a full refund and buy something else. If beyond the return window, continue to the other options below.
- Ask T-Mobile to swap your G2x for something else. This will only work if you have gone through 3 or more exchanges. If you don't want to swap for what they offer you or are refused, continue to the other options below.
- It's already not working, you're already on your 2nd device or higher. So you are at a point where an outside of warranty option may be something to consider. Check out the Android Development Forum or outside developers forum. Keep in mind, many things in the developers forum might void your warranty. But you can at least read and learn what you can and can't do with your phone. You will learn terms such as root and custom roms. If you don't care to try something like this, continue to the other options below.
- Sell your G2x on Ebay or Craigslist and get yourself something else (a laggy iPhone or even a dumb phone perhaps). If you don't care to sell it, continue to the other option below.
- Continue to suffer in your current state but please keep the whining to a minimum.
8a. Bite the bullet by paying the Early Termination Fees and find better luck with another device on another carrier.