[AT&T Samsung Galaxy Note I717] MonkeyThumper:
Hoping that someone here can help, or point me to a better forum for this type of problem. I'm starting here since my device is the i717.

I have the Galaxy Note i717. It has been rooted and running various roms over the past year. I have had no problems with my cell service, data or voice, in all that time. No wifi problems either. A few months ago, when Jelly Bean was released for the i717, I flashed it, completely stock, but still rooted. Worked great for me without any issues until a week ago.

So, I went on vacation, and everything worked great there, including wifi. I came back to work, and noticed that I did not have data service in our building. I did have voice/sms service though. Voice & SMS were tested and verified to be working. I rebooted the phone without luck. Cycled Airplane mode without luck. Pulled battery without luck. Turned data off, then rebooted, and turned it back on without luck. Needless to say, I have read about every hint I could find for data connection problems, and think I have tried them all.

Our office has an AT&T installed repeater system (not one of those little ones that you put in your house, but a true repeater, with equipment in our communication room, and with an antenna on the roof that connects with the main AT&T tower a few miles up the road. Antenna up the road is 4G-LTE, but our repeater is only HSPA+). In 3 years being in this building, I have not had any previous problems with my cellular connection through the repeater.

I went to lunch, and as soon as I left the building, emails started coming in. I had 4G-LTE again. Went back in building, and lost the mobile data connection again. I talked to a few other people in the building with AT&T phones (none have an i717), and they were working fine from the repeater.

Next, I re-flashed the phone with the stock ROM, still rooted and custom recovery, and still no luck. I flashed an old backup I had from when I ran ICS, no luck.

Now it was time for desperate measures. We rebooted the repeater antenna in our building, and still no luck. We have talked to AT&T, and of course, they are no help, and we can't get a tech to at least attempt to find out why only my phone has problems with their repeater.

Next, I got more desperate. I did a complete factory wipe/restore of my phone with odin, all the way back to the day like I took it out of the box. No root, no custom recovery. Still has the same problem with the repeater.

Now, I'm starting to think my phone is broke, except for the fact that I leave the building, and instantly connect up with the 4G-LTE tower. When I drive home, I have a few areas I go through that are only HSPA+, and I connect to those fine. It seems to only be a problem with the repeater here, but I don't understand why the other AT&T phones are able to connect without any problems.

I have tried 5 or 6 different modems (UCMD3, UVLG3, UCLF6, etc.).

My APN is the same as it always has been, but I did find a few others and tried them, and even though they worked outside the building, I would lose the mobile data connection as soon as I came in the building.

I also got with our companies "phone person", and they even set me up with a new SIM card, just in case something was flaking out on the original card, but no luck there either.

We have calls in with AT&T, but it has been a few days, and we can't be sure they are going to get a tech person to help or not. From the sounds of it, I won't count on it.

We do have wifi in the office, but it is restricted, so I generally do not connect to it, and just stay on my mobile connection for everything. But even if I do connect to the office wifi, I can't receive MMS messages, because they seem to only come in on the mobile data connection, even if wifi is connected to the internet. I tested this a couple of times, and I could not get my MMS until I went outside and connected to the tower 4G-LTE service, then they came right in.

So...what kind of help or direction can any of you give me? I'm up for suggestions, and will be happy to clarify any of the above.

I ran a log report (had a hell of a time figuring out how to get the logs from a JB phone, but found that CatLog is able to do it now). I was not able to interpret what I was seeing in the logs, but if someone knows how to read them, I can see if I can export them from CatLog, just let me know that you feel you can understand it, and I will send it to you.

I ran CatLog recording while the phone was without a mobile data connection, then cycled airplane mode, and watched it attempt to do a data connect and fail. That is when I stopped the log, so it should just be showing that info for the most part. I'm just wondering if the log shows something that I could throw at AT&T to get them to come look at the problem more.

Thanks everyone. Sorry such a long post, but I want to give as much detail as I could.

Butch