I'm having trouble with mobile data on my Samsung Galaxy S3. First some background...
I'll get this out of the way right off the bat: I did drop the phone in a shallow container with liquid in the sink two weekends ago. It's in a case that helped slow the inundation of water, to some extent, and I got it out within a second or so, and then I got the battery out ASAP and stored the phone in rice for 4-5 days to dry out. I took some of the interior of the phone apart after that, ready to clean it with 91% alcohol, but it looked nearly pristine, so I turned it on and everything seemed A-OK.
I had switched my number to a Ting flip phone, and then switched it back when the S3 was back in operation. Everything still seemed fine (voice, wifi, camera, charging).
But I didn't check mobile data--I'm on wifi almost all the time most days. Today I turned on Mobile Data and it didn't work.
I have checked my Ting device settings through the account dashboard. Everything under Megabytes is checked: access internet, send & receive pictures and video, and tethering.
I tried the following with no improvements:
- carrier wipe
- update PRL
- update profile
However, if I change the "preferred network mode" (under Wireless and networks > Mobile networks) from "LTE / CDMA" to just "CDMA" and let the phone restart, I DO get 3G data. But under "LTE / CDMA" I get neither 3G nor 4G data access.
One exception to this: when I have "LTE / CDMA" enabled (without wifi) and do a PRL or profile update, it appears to temporarily activate 4G data, try to update, and then disconnects. No apps can get online, though.
I am in an area with some 4G LTE coverage, and decent 3G coverage, and I'm doing all this testing from an area (my house) where mobile data access has worked in the past (and my wife's S3 continues to work the right way).
So my questions are:
- Has anyone seen this kind of problem before, and know what to do about it? (I've seen this post but my device settings are already right: https://help.ting.com/entries/23650893-Stuck-with-CDMA-Only-)
- Why would my phone get 3G data when in CDMA-only mode, but not LTE/CDMA mode, especially when I'm in an area with 4G LTE (greater Boston)?
- Is there any way I can diagnose whether there's hardware trouble, perhaps with the LTE antenna, perhaps from water exposure (even though everything else works), before I try a complete reset of all software?
- And are there any other troubleshooting steps I haven't thought of that I should try?
Thanks in advance!!!