hello people!
last year i was using a samsung galaxy mega i9205 4G with a 3G sim. so I went to Orange to take a 4G sim. DONE!
my phone broke and i had to use the sim in another phone, N7000, 3G. when i was outside, not connected to WIFI, the signal disappeared. after a restart, the signal was back, but for some short time.
i changed the N7000 with a Huawei P8lite 4G and the problem was gone.
after a while i changed the Huawei for a N7100 and the problem is back... if i change to GSM mode, i have signal, but if i change it to 3G mode, the signal is gone. the sim card is 4G. i can't find any 3G sim card any more in the stores.
the guys from client support didn't hear of this issue until now...
Related
Hey guys!
So, I can clearly see this "Your SIM card does not allow a connection to this network" problem is quite common around here, so here we go.
After one year of normal use, I got my problem one day ago, no connection whatsoever since then.
Tried shutting it down, removing the battery and switching back on after 20 minutes.
Tried my sim card in another phone - Works fine.
Tried another sim card, from the same operator, in my phone - Works fine (WTF)
I then called my operator (it's a Brazilian operator so no matter mentioning it now) and of course, no solution. Payment is fine, everything normal.
So I wen't to my operator store and replaced the sim and... Still doesn't work!
I then borrowed a sim from another operator and... Nothing! No signal!
And just now, I realized that, when I change to "GSM Only" it works! The thing is I have an unlimited 3G plan, and use it a lot, this is not a solution for me.
I've always used my phone on "WCDMA Only" or "WCDMA Preffered", but when I switch to those, or to anything other than "GSM Only", it dies, no signal, even with GSM Auto...
I tried hard resetting, nothing helps here... I have no idea what to do next.
When on WCDMA Only:
Signal Strength: -71 dBm 21 asu
GSM Service: Emergency calls only
GPRS Service: Disconnected
Network Type : unknown
I bought the Phone brand new on eBay (or rather a brazilian version called Mercado Livre) and it's clearly from the UK (i can see from its plugs) but it's unbranded and unrooted, but unlocked.
Also. I heard this may happen with stolen phones, blacklisted IMEI's... How can I figure this out? And how does that explain the fact it works under GSM only?
Just searched my IMEI on different databases, doesn't seem to be stolen.
This is swelling my brain to the point I think it's gonna blow.
My Phone Sim Card (TIM Network) - Works on any phone, and works in my tablet, but not on my DHD.
My Tablet Sim Card (VIVO Network) - Works on my phone, and work on my tablet.
My friend's Sim Card (TIM Network) - Works on his and my phone fine.
So my DHD will work with ANY but my sim (which was replaced for a brand new today, with the same line)
And my sim will work with ANY device but my phone.
Oh my head....
Turn Aeroplane mode on, then off continuously until you get a 3G signal. If you still don't get connected, take your battery out, wait 15 minutes, put battery back in and it should connect.
If neither work then I know of nothing more you can do.
Sent from my Desire HD using xda premium
If other SIM card works fine and only have issue on 3g, then it must be an operator side error. Go in a TIM store and prove with different SIM cards, and Phone. They have to do someting.
Good am guys, I'm from the philippines and I have a samsung galaxy s4 mini i9195t 4g LTE came from australia with vodafone sim last year. I'm using our local simcard. Can't access free data, 3g and 4g LTE. Upon researching i saw that I can only access 2g network which is the reason I'm here
Can anyone. Is there any way that I can access 3G and 4G LTE signal? I never root this phone nor unlock and the system was never been touch. When I got it I just insert my local sim.
Please help me guys I've been searching for the right forum for the solution of this problem.
Did you search at phone's settings for 4G or 3G? Maybe it's switched to 2G.Your SIM card is 4G?
Yes I tried to switch it to LTE/WCDMA/. WCDMA/GSM. WCDMA. It doesn't receive any signal at all. Even though im near from the 3g or LTE network. I can't even use surf promo when I registered to a surf promo here it always eat my balance. And i am not receiving 3g or 4g. It's just letter E always.
sim 1 signal quality is normal but sim 2 signal quality very poor and no bar in many times but when i check same network with old mobile in the same area it was 3 bar although my asus zenfone mobile signal has no bar. sorry for my bad English
....
Sim 2 is only on 2G, is 2G still available in your area? You may also be hitting a 2G far away as the tower near you no longer supports 2G
..
floridaman said:
Sim 2 is only on 2G, is 2G still available in your area? You may also be hitting a 2G far away as the tower near you no longer supports 2G
Click to expand...
Click to collapse
i'm at home and when i see my dad old mobile with same network that i have at my room signal is very good (3bar) but my mobile has no bar why ?? my dad has old Samsung mobile (2g only like sim2 of my mobile) not android mobile like me
That I can't explain. You may have a problem with your sim 2 modem, hardware issue.
i also have a problem with my both sims.neither the 3g nor the 2g network is good i checked the sim in other phones and they are fine seems to be my Mobile's problem.i also sent my phone to repair and got some improvement in signal strength but still it seems a little problem with it.
please help me guys what to do now??
floridaman said:
That I can't explain. You may have a problem with your sim 2 modem, hardware issue.
Click to expand...
Click to collapse
You mean Hardware issue of sim card or my phone ??
Yes, your either your sim card reader could be bad or your sim modem inside the phone
I will check another sim card
Hi guys, I think I have problem with my modem.
Around 3 months ago I bring my phone to Oppo Service Center because I cannot get 4G connection, I can only get 3G or H+.
The technician said that my 4G antenna is broken, it need to be replaced if I want 4G connection (price more than USD 200), I cancel it, because this phone is my daily driver I cannot let it stayed in the service center.
Then the strange things happen, last week I went to Bangkok, I bought sim card, and I get full 4G connection, but after I came back from my trip and use my sim card, it sill can only get 3G or H+.
My sim card was tested in Huawei and Samsung and it get 4G connection, so I don't think my it is a problem with my sim card too.
I'm from Indonesia, btw.
Need advice from you:
1. Have any of you experience this before?
2. Do you have recommendation for modem version that I can try?
I'm running official (rooted) ColorOS 2.1.5i with TWRP and SU installed.
Hi everyone!
I've surfed all I've found here about Xiaomi Mi A2 Lite and the bands/carrier problems here in the USA, but I can't solve my problem. Here are the facts:
I have a Xiaomi Mi A2 Lite Global Version, Android 10 updated, not flashed, not root, works perfect and I love it.
I moved to USA from Spain 1 month ago, I got a new SIM from T-Mobile and the first two days worked, but suddenly lost the connection, not only data but calls and messages.
If I change that SIM with another one, (also T-Mobile, my boyfriend bought it the same day, same plan), then it works again but after some hours not signal again.
I've been doing this SIM change over the last 2 weeks, but it is really uncomfortable, I've tried to get a pattern but it doesn't depend on the time that the SIM is on the phone (it can be operative 2 hours or 2 days) nor in the data used or in the area.
When I lost the signal, the SIM is recognized but is like I was inside a deep cave with no coverage.
There is no way to recover the signal, I've tried airplane mode, rebooting several times, reinserting SIM, port change, even changing the SIM and changing it back, but nothing.
When I have signal I get T-Mobile 4G LTE and runs smoothly.
My SIM ports are fine because both read my Spanish SIM card, and the SIMs cards work perfectly because my bf can use both.
I don't know if is a network compatibility problem, he has a POCO X3 that supports the same bands and he gets signal all the time.
I bought a new SIM card from Mint just to check if it was about the carrier, and It does not work either, even when the phone compatibility says that should work.
I'm stuck now
Any advice? Should I buy a new phone to live in the states? (I'm going to be here for a year and I'm spending so much money on moving in that I would prefer not)
Thank you in advance!