[Q] Samsung Galaxy S4 (SGH-1337M) dropping cell network - General Questions and Answers

Hi All,
I'm having a similar problem to this Samsung Galaxy S4 Call Drop and Network Issues thread.
- signal randomly drops from full bars to nothing/nil
- however it isn't random when connecting to a wifi network (cell connection drops completely every time)
- this doesn't happen when using 2g only
Phone model = SGH-1337M
Running Jamal2367's 4.4.2 GPE ROM
Baseband version = 1337MVLUAMG1
Build number = KOT49H.S001.131204
Any help is greatly appreciated!

Can anyone please help me with this?

Related

[Q] WiFi Signal on LiquidSmooth ROM v2.5 Very Poor

I updated from LiquidSmooth version 2.1 (Android JB 4.2.2) to the newest 2.5 version (JB 4.2.2). After updating I notice I no longer get decent WiFi signal throughout my house. Now I have to be in the same room as the router to get WiFi signal where as before I could be anywhere in the house and my S3 would get decent WiFi signal. Right now where I'm sitting it's jumping between 0 "bars" and 1 "bar" of signal strength on the indicator. When trying to use anything with this signal strength the apps tell me that it has no connect to the network. I can confirm other devices (3 laptops and my father's DROID RAZR M) connect to the WiFi network just fine at this distance. Is there any known fix to this on the LiquidSmooth ROM or some tweak I can do myself to increase my WiFi signal strength? Do others using the latest version of LiquidSmooth have these issues as well? Any help would be greatly appreciated.
Device Details:
Model: SCH-I535
Kernel: 3.4.47-leanKernal-vzw_aosp_43-6.1-+ (Sunday May 26, 2013)
ROM: Liquid-JB-v2.5-OFFICIAL

Randomly becomes edge?

Hello, in the past, my Note 2 N7100 running official CM 10.1 was able to receive 3G or HSPA+ data from the network. However, recently, it can only be able to receive edge signal which causes the mobile data download speed to become extremely slow. And also, I did not change any of the settings. Therefore, what may caused the signal to be changed to edge from 3G or HSPA+ and how can I fix this? Thanks.
Some picture.

[q] samsung galaxy mega 6.3 no cell signal

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[Completed] [Q] Unable to connect to 3G

Hello,
I am having issues with my samsung galaxy s3 i747m. This is a canadian model phone (Rogers). I am traveling so I rooted my phone and also unlocked the network. When I was in India, I was only getting 2G connection when I selected GSM/HSPA (auto) in mobile networks and was unable to connect to 3G. If I connect to HSPA only from mobile networks. I lose all my connections. I don't even receive network also. Right now I am in middle east and I am facing the same problem.
My phone has GSM, HSPA and LTE options to choose from mobile networks in settings.
Just wanted to let you know that I called the network carrier and they informed me that they have activated 3G services. It still didn't help. I tried different network sim and I am still getting 2G connection.
I changed the APN settings which is suggested by the network carrier and still I can only get 2G connection and unable to connect to 3G connection.
Some information about my phone:
Model number: SGH-i747M
Android Version: 4.4.2
Baseband version: i747MVLUFOB1
Please help me to solve this issue as 2G connection is extremely slow. I will really appreciate it.
Thanks
Hi there,
Here is few discussions about this issue:
i747m 4.4.2 edge work fine but no 3g reception
[Q] I747M Can't get 3G/LTE data after IMEI loss / restore
You can ask directly in one of above thread or directly here:
AT&T Galaxy S III Q&A, Help & Troubleshooting
Good luck

Cannot answer or make calls very often.

Using Three as an operator and when calling or answering it of course switches from 4g to 3g but the connection is lost. No data connection. Anyone with the same problem?
Can it help with a new rom?
I have reinstalled the phone 2 times but no success.
BTW. It works when I have 4g off.
same issue here with my new xperia xz. with stock 6.0.1 (unrooted) and with newest 7.0 firmeware. my redmi note 3 had 300 % better lte signal. does someone have the same issue? my provider is tmobile (including LTE band 20)
regards
Rnpw

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