[Q] Blocking specific towers by CID? - Android Q&A, Help & Troubleshooting

I've recently been experiencing some problems with my phone (Motorola Photon 4G) in which I get full bars but no service. After troubleshooting the problem with a tool called Network Signal Info, I've found that it only appears on a specific tower (I've been keeping track of the CID it provides). Unfortunately, that is the tower closest to where I live and my phone defaults to that one. On any other towers, I get service (I can text, call, etc).
I'm looking for an app that can prevent my phone from registering on these towers (and thus blocking my service).
Any suggestions?

I've been reading into PRLs. Can I do this by creating a custom PRL? I have no idea how to do this for my phone, though.

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[Q] No 4G. Please help.

I just got off the phone with a Verizon rep and they confirmed that there are no network outages in LA. So I guess there's something wrong with my phone. I'm currently running the debloated OTA rom with the radio that comes with it. I can intermittently connect to 4G, but only the upstream seems to work. It randomly cuts out, bumping my internet off or dropping me to 3G and 1X. Does anyone have any insight into this?
lolipear said:
I just got off the phone with a Verizon rep and they confirmed that there are no network outages in LA. So I guess there's something wrong with my phone. I'm currently running the debloated OTA rom with the radio that comes with it. I can intermittently connect to 4G, but only the upstream seems to work. It randomly cuts out, bumping my internet off or dropping me to 3G and 1X. Does anyone have any insight into this?
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Well I think you were lied to,they have been messing with the network in several market over the last few days,if flashing different radios doesnt fix your problem it has to be the network, in sioux city iowa the same thing had been going on ask day, they are getting ready to switch the 4g on, it happened in three twin cities yesterday when they expanded the coverage, can't always believe what the reps tell you
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The rep seemed like an honest dude, but I guess there could be sneaky network changes and upgrades. It might also be hardware damage. Does anyone about the 4G antennas on the back cover of the Thunderbolt? Does anyone know where I can get a replacement? A ticket has been opened for some techs to check out the network in my area. I'll keep you all updated.
You're sure your network mode is on CMDA / EvDo + LTE?
Positive. I can't think of anything else except network issues or hardware damage. :\
I am still in sioux city and the network is flippin out,give it a day befor you go buying hardware
Sent to you via my handheld cellular communications device
Good call on that one. 4G is up and running when I leave the apartment. The strange thing is I have basically full 4G reception outside of the apartment, but inside: no 4G, but full 3G. Such is life, I guess.

Phone will not data roam majority of the time

Anyone know or have similar problems? I have PRL 12121 (and have even tried it w/ the current PRL by using the Update PRL option) and if I force roam on my phone, data refuses to connect on a majority of Verizon towers. The tower nearest my house, I can connect 3G roaming, and a few towers here and there, but majority I cannot connect what-so-ever. Any ideas on this? I have even reverted back to a stock rom on an older radio firmware to see if it'd solve the problem, but nothing.. I am able to make phone calls the entire time, just not data. I've also done a profile reset, and had Sprint reset on their side as well, and still no go.
Those hacked prl's are known to only work on some towers. I've found that different prls will work better with different roms. Just try a few more out.
sitlet said:
Those hacked prl's are known to only work on some towers. I've found that different prls will work better with different roms. Just try a few more out.
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I can force update to my regular issued PRL (21090) and have the same issue, so doesn't appear to be due to a hacked PRL. Sprint Tech Support is useless over the problem. I am running ZR3D-XL.. I've even gone as far as to go back to a standard STOCK ROM (while backing up my current install) to make sure there wasn't something weird going on. I'm just baffled over the whole ordeal.
Ok, so I've completed my investigations of my data problems while roaming (I'm in Austin, TX)...
When I select force roaming in various locations in my home market, I have determined that when my phone tries to connect to Cricket instead of Verizon, then it goes crazy. I just did a force roam, got full service roaming and 3G, I dialed *228 (PRL Programming, and of course it fails because I'm not using that carrier) to see which service answered, and Verizon was the carrier.. A few seconds later, my phone changed over from full service to having only 1 bar, and data connection dropped and giving the error saying it couldn't connect to the mobile network. Dialed *228 again, and this time, Cricket was the provider. A few minutes later, full service again, and *228 revealed it was Verizon. So, I've come to the conclusion that for whatever reason, Cricket is not allowing Sprint to roam on their own serviced towers, although they are supposed to have roaming agreements in place.
Anytime my phone connects to Verizon, whenever I force roam it to, the signal strength is excellent and I get 3G Roaming, but Cricket, even with the lower signal strength, still comes and takes over my phone and forces my data connection to die. I have even tried (as mentioned in a previous post) to use the official sprint PRL that is valid on my phone right now, even with 1X, and I have the same problem.
I've been doing this testing for several days now all over my market, and it's the same everywhere I've "roamed". It's annoying. Guess I need to go back and get a PRL prior to 2010 to see if I still have this issue, but of course, I would be missing out on all the updated agreements.
Anyone have any thoughts on this or how to NOT roam onto Cricket?

[Q] Signal issues after performing domestic unlock

I performed the domestic unlock on my phone about 10 days ago, and everything has been good for the most part. I'm currently using the T Mobile MVNO, US Mobile. I'm located in Tampa, FL, and I have HSPA+ in most areas. I've noticed that if I travel into an area with weak signal strength, usually indoors, and and I lose service, my phone will not automatically come back into service when I return to an area that has stronger signal strength. I have to manually toggle airplane mode, and then it will pick it up. Has anyone else encountered this problem? I'm assuming it maybe has to do with not having the 1700/2100mhz band, but I haven't seen anyone else mention anything similar. It has happened to me on both the MI3 and MJ4 modems. If I go into my phones settings under status, "My Phone Number" says unavailable.
I understand that my phone is not designed to operate on TMobile, so it just might be the way it is. I just wanted to see if this is happening to everyone or just me. If anyone else has experienced a similar issue or has some insight into what might be going on, I'd appreciate it.

[Q] [LG-D620R] GSM Phone Connected to CDMA Networks? (And other questions)

I've somewhat recently obtained the LG G2 Mini (D620R) due to my stupid self bricking my Samsung S3. In every single way it utterly destroys the S3, despite the S3's specs being slightly better. I've recently switched to T-Mobile, since I was under the impression that T-Mobile is a GSM carrier, and my phone is GSM as far as I know and Straighttalk was no longer a viable option.
I was told I would get spotty data coverage where I live, and that is completely understandable and I knew that going in. However, I have been getting little to no voice and text service where I live, and fair service in town. Even a free cell booster did not seem to help despite getting fair signal at the window unit. I did a bit of troubleshooting and for some reason, the phone is connected to T-Mobile (WCDMA). This makes no sense as A)It's a GSM phone (afaik). B) T-Mobile is a GSM carrier. The only other options when scanning the networks in the area are AT&T (WCDMA) and AT&T (GSM). In town, there is a T-Mobile (GSM) network, but selecting it results in EDGE instead of 3G/H. The cell booster did work some at first, but it seems to have stopped helping at all. Since it is not a T-Mobile phone I can't use Wi-Fi calling/texting. Is there something I'm missing? Did I find wrong information/get lied to about T-Mobile? Did I get scammed on the phone? I'm hoping I can get some help or figure this out, I can't really afford another phone and getting a phone through T-Mobile would push my bill up way too high (and honestly, I'm considering dropping to the non-unlimited plan because of how insanely expensive it is).
A less important question, how do I bypass the tethering restrictions? Do I need to root the phone or is there a simpler method? Last time I rooted a phone...it resulted in me having to buy this one in the first place...
Also, is the S3 really that badly crippled by Touchwiz a weaker phone can utterly humiliate it?
Ok, first of all google a bit about mobile network standards, there's everything explained. I'll just introduce you with a few things:
1. WCDMA is not equal to CDMA, it actually represents 3G standard for regular (not CDMA) phones.
2. GSM equals 2G standard, and it gives EDGE data communication, while WCDMA equals 3G/3G+ standard and it gives HSPA/HSPA+ data communication.
As I said just google it, at your location you probably have stronger 2G than 3G signal, and when you go to some bigger town or city you get 3G better.
For start read the information given at this link.
Problem is, I get absolutely no EDGE at all where I live, only 3G/H and I consistently lose all service and cannot make calls. I am well within the coverage area for at least voice. I also have been having more and more troubles with data even in town. It's progressively gotten to the point where I have to constantly toggle data just to get some mobile data for a few minutes or so.
Try to select 2g only network and you should get EDGE.
If I select 2G Only, I get no service at all, it doesn't even attempt to search for a signal where I live (Red 'X' instead of spinny icon). However in town if I do this, I do immediately get switched to EDGE/2G and it's signal is slightly better.
Than it means you don't have network coverage at your place, that's all.
My booster however shows it gets 3 bars, and I was made aware at the time I would get at the very least get voice service. I did some checking and I'm about 5 miles from the nearest cell tower. My only other option at this point is AT&T, but I have a general distaste for them, can't afford a phone if they don't have a BYOP program, and they do shady things to rooted phones from what I've heard.
I do expect poor or no data service where I live, I can make do with that. What I don't expect is no voice service at all, sometimes even to the point of no E911 either.

Canadian roaming/ignoring roaming towers

this isn't z5 specific but since I just picked this phone up I figured I'd start my search here.
I was on verizon before getting my z5c so this wasn't a problem until I switched to at&t.
Part of my weekly commute consists of driving down a highway that follows the St. Lawrence river and thus I constantly pick up the Canadian towers and can't stream my music. I'm not stranger to rooting, unlocking, etc so any ideas I am open to. Basically I'm looking for a way for my phone to ignore the Canadian towers, regardless of signal strength. And I don't mean just turning off the data roaming as this isn't a proper solution. Any ideas anyone?

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