antenna's - Samsung Galaxy S II Plus

antenna's mobile galaxy i9105p switching off and switching on.and imei did not change.what to do for that?
android 4.1.2

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Galaxy S3 Clone, GT-I9300, MTK6575 Network problem

Hi All
I bought galaxy s3 I9300 from China but when installed sim card (micro sim, i descovered it is dual sim but one is hidden)
I have a network problem (Network not stable) some time i have full network and sometimes no network so the voice becomes very bad while making call
I am Attaching some pictures for the phone and specifications
Any one can help me please to solve this problem???
I have to this phone. But I haven't network. Can anybody help?

[Q] Samsung Galaxy S4 (SGH-1337M) dropping cell network

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
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Any help is greatly appreciated!
Can anyone please help me with this?

[Q] LTE issue

I have samsung Galaxy s4 mini I9195 lte mobile. it was made by Samsung Vietnam.
When I first bouht it I discovered there was no LTE mode in network options. There was only 2g and 3g modes.
My friend asked me too flash Original samsung jelly bean 4.2.2 uk os on it and I did it.
Finally now I don't have 2g option and now there are 3g mode and auto(2g and 3g) mode only.
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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

Unlock 5.8Ghz Wifi on SM-G920F

Hello,
I am on a Galaxy S6 SM-G920F.
Stock rom
Android 7.0
G920FXXU6ERC1
I know that 5Ghz wifi is available but due to restrictions it is disabled in Europe.
Do you know if there is any way to unlock that frequency manually?
Purpose : the connection with my drone is really more stable in 5.8Ghz.
Also I have a tablet (Ifive mini 4s) that works in 5.8ghz.
Thanks
I would like to say also that my wife's phone (Galaxy A5 2017 stock rom) is by default unlocked for 5Ghz wifi
Maybe he is talking about 5.8Ghz not 5.2Ghz

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