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[Q] Fried Radio? How to Test?

My MyTouch 4G slide has been sitting for a month or two after previously working fine. Now it powers up however it can't get a signal with my T-mobile SIM (or my wife's). I'm concerned that somehow the radio might have gotten fried. So far I've reflashed it back to stock, unrooted, and hard reset it a few times, nothing has worked.
If I go into Wireless & Networks, drop down to Mobile Networks, Then Network Operators, and "Search Networks", it takes a few moments and finds AT&T & T-Mobile (I'm in an area where my devices normally get full T-Mobile service). However when I try to connect to T-Mobile, I get a message saying "Your SIM card does not allow a connection to this network". Same SIM works fine in a G2, connected to T-Mobile.
Anyone have a way to test the phone radio, or perhaps have an idea on what it's issue is?

I have had this exact problem, and attempted the same solutions, but without success. Was working fine, and then 1hr later quit working and was not able to repair even after return to stock/deroot, etc. Doing warranted return, and just got replacement phone by mail for swap out from t-mo.
am a little worried about reroot and rerom in case I have another problem.

My device is doing the same thing. Not sure when it started... I havent used the MT4GS in a few weeks, picked it up and reset it back to stock everything, and it's not getting any service from any of my SIM cards. I unlocked it a while ago to use on AT&T prepaid SIM, and not even that will work... Any advice would be helpful...

dadarkmcse said:
My MyTouch 4G slide has been sitting for a month or two after previously working fine. Now it powers up however it can't get a signal with my T-mobile SIM (or my wife's). I'm concerned that somehow the radio might have gotten fried. So far I've reflashed it back to stock, unrooted, and hard reset it a few times, nothing has worked.
If I go into Wireless & Networks, drop down to Mobile Networks, Then Network Operators, and "Search Networks", it takes a few moments and finds AT&T & T-Mobile (I'm in an area where my devices normally get full T-Mobile service). However when I try to connect to T-Mobile, I get a message saying "Your SIM card does not allow a connection to this network". Same SIM works fine in a G2, connected to T-Mobile.
Anyone have a way to test the phone radio, or perhaps have an idea on what it's issue is?
Click to expand...
Click to collapse
I've used Z-Device Test by Zausan Innovacion Tecnologica to test just about everything on my phone.

I'm having a similar issue on mine after trying jupoeanutbear and failing. I have signal but data craps out at random times now.
Sent from my myTouch_4G_Slide using xda app-developers app

[q] no lte

I recently replaced my sim card due to poor connectivity. now I don't have problems connecting to the internet but I never see the4g lte icon in the status bar only the plain 4g. my speed tests aren't nearly as fast as they were before either. did I get another screwy sim card? this is getting aggravating.

So you had LTE before, and don't now? Exact same location?

ATT? Check your APN

yep same places as before

Call ATT and tell them. Maybe they need to reprovision you.

Papi4baby said:
Call ATT and tell them. Maybe they need to reprovision you.
Click to expand...
Click to collapse
That's a good point. When they issued you the new SIM, they might have somehow messed up the LTE provisioning.

Not sure if it's the same issue, but I'm right outside of NYC. Normally, I don't get LTE. I drove into NYC and the indicator showed 4G LTE, but I couldn't access the internet. Constant DNS errors. Restarting the phone fixed that and everything worked.

Can't Dial Out or Receive Calls

My husband finally let me root and rom his S3 (I have a Gnex). Unlocking the bootloader and rooting (using Odin) went well. When I installed SlimBean+GApps, however, we started having an issue. He kept losing 3 & 4G signal. We didn't know about the roaming issue, so I had not backed up the IMEI. I flashed Clean Rom, and the issue is partially fixed.
The phone's signal is fine now, 3-4 bars 4G most of the time. The trouble is, we can't dial out to any numbers, and any calls to the phone go straight to voicemail. We've pulled the sim card and let it sit for a bit, but that didn't help. Dialing *228 (as Verizon tech support had him do about 4,583 times) just brings up a message about the phone being activated by the sim card, and roaming capabilities being updated. All tech support had to say was that Google Voice was probably the problem, even though we've both had it for ages with zero issues. :/
Any ideas? I don't really want to unroot and take it in to the Verizon store, but I will if there is no alternative.
EDIT: Just discovered that 4G is only working when "Preferred network mode" is set to Global, rather than LTE/CDMA.

*228 is for 3g phones only, it does absolutely nothing for LTE sim phones. Here's your solution btw.

I knew it! I kept telling them I didn't think that was supposed to do anything when I have a sim card. Crazy first string tech support. They also didn't know my battery was removable.
Will try the things listed in that link, thanks.

Falconfree said:
I knew it! I kept telling them I didn't think that was supposed to do anything when I have a sim card. Crazy first string tech support. They also didn't know my battery was removable.
Will try the things listed in that link, thanks.
Click to expand...
Click to collapse
Haha Verizon lost credibility with me when I rented their global phone for travel last summer and when I got back to the US the instructions to get my GSIII working began with dialing *228. There wasn't even a warning about it being unnecessary for LTE sim phones.
Good luck and let me know how that goes.

[Q] Lost data connection, trying to determine cause

I have the Sensation 4G, S-Off, using the Official SlimKat build 8.0-WEEKLY-6966, and I'm using the T-Mobile SIM through Straight Talk. I haven't had any problem with the phone or data connectivity before, I just had to scour the internet for the proper APN settings after buying the phone. That was a couple years ago.
I still have the ability to call and text, just no data connectivity. There are seven APNs available under "Settings", and when I switch to any of the others the phone picks up 3G/4G signals. I just can't connect to them since they're for different carriers like Metro PCS, T-Mobile, and Walmart Mobile. The signal disappears when I switch back to my carrier's APN. According to Straight Talk Support I'm not being blocked and I haven't gone over the 3GB monthly limit.
I'm going to T-Mobile tomorrow to see if anyone there will try their SIM in my phone to confirm the radio is still working.
My only other thought is that the problem is somehow software related. I haven't done anything other than update a few apps, but I didn't notice the problem until it arose the next day. It's been like this since Sunday.
Thoughts?

Data is gone

will be on phone with AT&T in the morning or via chat with them. I have no access to my mobile data. no explanation, just stopped working. went into my settings for both SIM cards as I have data on both actually, but SIM 1 is the primary one and designated one. Switching settings made no difference. Had it look for network automatically says it's joined already but it's not. no connection, no internet, no Google now, email, nothing. confirmed with AT&T that my data plan is not messed up and still on my account. Was driving and it was end of night so rebooted phone, did not resolve, going to call tomorrow. (As if I have the time but I missed messages I needed to deal with on my break that came in personal email that can't be accessed at work). any suggestions with APN settings I might be missing or something? This is random and weird. Unless somehow data has an outage but you'd think the rep would have told me that. But this needs to be resolved! Don't know if it's AT&T or a phone setting.Was working fine until this morning! Love the phone! anyone? BTW: I just logged on to my account and have an idea: My SIM 1 is from my Note 3 but my account is reflecting that my device is now showing as unknown, so I wonder if this is what is going on. hmm. I'm still getting phone and text messages though. I guess I'm just going to register my SIM 1 now over too as well. maybe that's the issue. my SIM 2 is fully registered to the Pure XL. I guess I'm going online chat tomorrow again. Also, 4G is not showing up now as an available option under network choice either. So I wonder then if it's an outage issue but it's almost midnight here. Will have to chat tomorrow at work somehow with tech support. It's not the issue though with the SIM card from the Note 3 being the cause because SIM 2 is registered under the Pure XL and has a separate data plan, and that one is not working either when I try to temporarily make SIM 2 the data SIM slot. So it must be an AT&T issue. Will have to wait until the morning.
Sent from my PURE XL using Tapatalk

Well, I have learned it is a twofold issue, but importantly, all CARRIER RELATED, not phone related thank goodness. Phone is perfect
1. AT&T did a roving sweep and discovered that my IMEI on SIM 1 was no longer matching, so it turns out that my using the Note 3 SIM was in fact, an issue. I have since had the SIM re-provisioned with the IMEI for SIM 1 now on the Pure XL.
2. However...it turns out that AT&T in my area is in fact having major data network outage problems and that explains why I was unable to log on yesterday even with my properly provisioned SIM 2. And the network is in fact, STILL OUT. So I am still unable to access mobile data and it has NOTHING to do with the phone. It's AT&T all the way. Right now-the network is down. Okay-fine-that happens-they'll fix it. If you call 611 there's an alert saying that. I know stuff happens. That explains why I was getting the weird readouts yesterday that were only showing 2G and 3G on the network. (and I still wasn't getting any connection to data anyway).
So that's what the issue is. The network has been down though more than a day which is ridiculous. They really need to fix that or pro-rate that on our bills then! I'm unable to access personal email from work and rely on my phone and this is a long stretch of time to be offline so they really need to get on the stick and fix this!

babsk said:
Well, I have learned it is a twofold issue, but importantly, all CARRIER RELATED, not phone related thank goodness. Phone is perfect
1. AT&T did a roving sweep and discovered that my IMEI on SIM 1 was no longer matching, so it turns out that my using the Note 3 SIM was in fact, an issue. I have since had the SIM re-provisioned with the IMEI for SIM 1 now on the Pure XL.
2. However...it turns out that AT&T in my area is in fact having major data network outage problems and that explains why I was unable to log on yesterday even with my properly provisioned SIM 2. And the network is in fact, STILL OUT. So I am still unable to access mobile data and it has NOTHING to do with the phone. It's AT&T all the way. Right now-the network is down. Okay-fine-that happens-they'll fix it. If you call 611 there's an alert saying that. I know stuff happens. That explains why I was getting the weird readouts yesterday that were only showing 2G and 3G on the network. (and I still wasn't getting any connection to data anyway).
So that's what the issue is. The network has been down though more than a day which is ridiculous. They really need to fix that or pro-rate that on our bills then! I'm unable to access personal email from work and rely on my phone and this is a long stretch of time to be offline so they really need to get on the stick and fix this!
Click to expand...
Click to collapse
Fortunately the network is up again by 12 noon. Getting LTE just fine on newly re provisioned SIM 1 card.
Sent from my PURE XL using Tapatalk