my phone has been getting no 4G and shows 3G with a triangle. also it has been shutting off often and randomly. I think it has something to do with the latest update? I have reset my phone already and still does it. Help?
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I assumed they were correct since I factory reset it.... looking now everything seems the same as before. I have never changed these settings. Roaming is off, Data connection on, SIm in Global mode, so everything looks good.
I had this problem with my HTC 8x also and I finally found a fix that worked.
Remove the SIM card and put a piece of scotch tape on the back of the SIM card. (The side without the connectors). Reinsert the SIM card. I only needed one piece of tape, you might need two or more.
The issue is that the SIM card can move away from the contacts of the phone. The phone thinks the SIM card has been removed and shuts down.
My 8x has not shut down since I did this several months ago.