I purchased a Global GSM 16 GB Moto G from Amazon back in January, and have been using it purely as a WiFi device these past months. I bought it to use as a travelling phone, as I already have a phone but needed something unlocked to use when on trips. I am in Mexico for a month and have been having trouble getting a local SIM card (from a company called Movistar) to work with the phone. They only had full sized SIM cards nearby, and I didn't want to travel an hour to pick up a Micro SIM, but I had brought along a SIM card cutter just in case, and quickly trimmed it down.
I popped it in and the phone quickly recognized it and picked up signal. I tested sending and receiving messages, calling and receiving calls, all with no problems. However, the next morning I saw that the phone had disconnected and was no longer recognizing the SIM card. I did the usual restart, which worked for an hour, then I had to resort to taking the card out, cleaning the contacts, and putting it back in. It worked for another couple hours, then quit again. Whatever I try it tells me my SIM card is invalid or doesn't recognize it anywhere from a couple seconds to a couple hours after I insert it. I have tested the card in an old unlocked RAZR V3 with one of the Micro to normal SIM adapters included with the SIM cutter and it works just fine, with no connection problems even after a couple days of use.
This leads me to believe that the problem lies within the software of the Moto G itself. After a bit of research it seems like this might be a problem with Kit-Kat. I've checked the SIM contacts inside the phone with a flashlight for damage (though I'm very careful with my tech) and they all appear to be just fine. I've attached a screenshot of my lock screen with evidence of the "Invalid SIM" message highlighted in orange.
I would appreciate any help figuring this out!
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same things happen to me also.
when I cut down a normal sim to micro . some days itss working then same invalid sim problem.
only solution to re insert sim.
At this point my phone will reject my SIM card every couple minutes to every couple hours. Sometimes it will not even recognize it immediately after a SIM re-insertion cycle. Right now it's pretty much unusable as a cellphone.
Related
I have an unlocked AT&T Skyrocket SGH-I727 that is very picky about which SIM cards it accepts. I have seen a few similar forums, but nothing that fixes or seem directly applicable so want to start a new discussion.
No SIM Card
Similar problem but I'm not locked to any particular network, rather it is a few networks that work, a few that don't (all GSM).
No sim card error?? Any solutions??
My problem isn't no signal, it's no SIM.
"No sim" issue on Skyrocket
SIM card tray in my phone doesn't appear to be loose.
No signal after sim unlock
Not working at all, no solution.
I was running Cyanogen Mod with no problem on China Unicom (could use also China Mobile 2G) but on a trip last month to Bolivia was surprised that the phone doesn't accept any of the local SIM cards (such as Tigo, a GSM network) while an HTD Status and my backup SGH-i777 worked with all of these networks.
I tried a few different ROM's before flashing the i727 phone back to stock using Odin. Other than installing Team Win Recovery v2.2.0, it's plain stock, not even rooted. See below:
Android version 4.0.4
Baseband version Unknown
Kernal version 3.0.8
Build number IMM76D.UCLF6
While back in the US I tried several other cards, including an AT&T SIM, Straight Talk (actually from AT&T) and it also said no SIM. I've found that the China Unicom SIM works perfectly and a few others (see photo below) consistently work fine. I'd really like to get the phone working again on all of these GSM networks like my i777, HTC and i9300 do.
I've tried flashing three radios Radio_RIL__I727ATTKJ2, Radio_RIL__I727ATTKK1, Radio_RIL__I727RUXKJ7 but other than making T-Mobile 3G work, haven't helped me use any of the other SIMs.
Can anyone help with this? Should I be flashing another radio, replacing a part of the hardware (warranty isn't an option)? I'll buy a case of Redbull, Guinness or similar if I can get this working.
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read returning to stock sticky, perform a reset afterwards, if still having issues, then either faulty phone, like sim tray or its contacts, or the unlocked method was fracked up in one way or another, try the free unlock method and see what happens, its in the 1stop sticky
Hi everyone,
I'm having a very bad issue with my Nexus 5.
Last week, my mobile network stopped working, always displaying "No service".
The sim card was still recognized, since I had to enter my pin code after each reboot.
So I tried to put my sim card in a friend's phone, and it worked perfectly on his.
Next, I called Google tech support to get some information and they simply sent me another Nexus 5 to solve the issue.
The thing is, I'm having the same issue with the new phone, but it's even worse.
The sim card is not recognized at first when I reboot the phone.
After I put it out and in once, it asks me for my pin code. And then, I get the "No service" again.
If I try to make a call it says : "Turn off airplane mode to make a call" (see attached screenshot). I tried to turn it on and off, nothing works.
I must precise that the network worked as a charm with the new phone for 3 days and then nothing.
I tried several sim cards from different service providers, and I get the exact same issue every time. and boot in safe mode but i get the no service again
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Here is my configuration :
Android 6.0.1
Security patch level : 1 january. 2016
Baseband version : M8974A-2.0.50.2.28
Build number number : MMB29S
Is anyone having this issue ?
Thanks.
There is a known problem with the N5 where a totally dead battery can kill the radio component. No, it makes no sense to me either, but after it happened to me I did a lot of reading across many forums and discovered I wasn't alone. Flashing half a dozen different ROMs made no difference. Eventually I contacted Google and, as with you, they replaced my N5 with a refurbished model which has worked perfectly ever since.
All I can suggest is that you report the second phone to Google and hope that they will replace it again.
Hello!
I have already poured my heart (an obsessive number of hours) into getting as far I as I have with this and could really use some expert advice. I have repaired a water damaged Droid Turbo 2 (factory unlocked, locked bootloader) stuck in bootloop and eventualy got the device to a point where everything I tested (screen, digitizer, sensors, wifi and bluetooth radios, speakers, microphone, cameras, flashes, battery and charging circuits, ...) worked. I was super excited, until I tried to activate the device with my carrier today, multiple times, (Metro PCS) and failed. I'm not an expert on this stuff, especially how cell networks work, and I need guidance on what to do next.
When I attempted to activate the device at the Metro PCS store they set the phone up from the carrier's end with the IMEI and sim card number, and after the phone was rebooted multiple times no connection was ever made. No service is shown on the 'bars' and Cellular network settings > Mobile Network Type displays 'No service'.
The brand new sim card appears to be functioning. When calls are attempted, a prompt appears that states the phone will not make calls on airplane mode, even though airplane mode is definitely not active. The prompt allows you to select 'Yes' to turn airplane mode off, after which the phone states that it is turning on the radio. This process apparently times out, and I am sent back to a blank dialer. The people at the store or Metro PCS Dealer Support Group haven't been able to tell me why it won't work, except a lady on the line eventually said that she thinks the phone only supports CDMA, but I am sure this isn't true. At the store we did try manipulation of APN settings with no luck as well.
Main things I did to get the phone this far (ie. before ever attempting to activate it with a carrier) - flashed OEM firmware 6.0.1 I found online (didn't fix), torn phone down and cleaned corrosion with 91% isopropyl alcohol (the step that got the phone out of bootloop), tore NFC/wireless charging coils part flex cable in the process which caused the charging circuits to malfunction, replaced that part, and tested every feature I possibly could.
The only two things I can think of as to why I can't get the device onto my network: the cellular radio happens to be the only thing still broken on the phone OR it's just not going to work with Metro PCS for some reason.
I know there are people on these forums that know a lot about this stuff, and I could really use your help. Any advice will be appreciated.
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Hi !
Most probably a hardware issue , let`s keep the discussion in one place
Original thread here
Good luck !
thread close
Here is what happened:
I got a week old phone with a broken screen.
Decided to try to fix it so I ordered a spare screen from eBay. After 2 Weeks display finally arrived so I changed it my self by following a YouTube tutorial.
Everything worked flawlessly except new display had 4 dead spots on a touch screen so I complained and got a new one.
I changed it again and this time screen was OK but I can't get GSM signal, so I dissassembled it and assembled once again but still no change.
Tried different sim card-nothing happened.
Tried to register network manually but it doesn't work.
Plane mode ON and OFF is not helping neither.
Phone recognise a card, asks for PIN, PIN OK but still no signal.
Anyone has an idea is there a way to improve or boost GSM signal? Or to fix "receiver"?
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sour_tasty said:
Here is what happened:
I got a week old phone with a broken screen.
Decided to try to fix it so I ordered a spare screen from eBay. After 2 Weeks display finally arrived so I changed it my self by following a YouTube tutorial.
Everything worked flawlessly except new display had 4 dead spots on a touch screen so I complained and got a new one.
I changed it again and this time screen was OK but I can't get GSM signal, so I dissassembled it and assembled once again but still no change.
Tried different sim card-nothing happened.
Tried to register network manually but it doesn't work.
Plane mode ON and OFF is not helping neither.
Phone recognise a card, asks for PIN, PIN OK but still no signal.
Anyone has an idea is there a way to improve or boost GSM signal? Or to fix "receiver"?
Click to expand...
Click to collapse
Update about phone:
I wondered how my friend managed to crack a screen just buy stepping on it, and now I know.
I had to screw a shelf today, and while holding a screwdriver in one hand, and shelf in other, the only option to get some light was to put a phone with flashlight on between my teeth. Same second I've "bite" my phone, I heard "crack" sound, and the corner of my screen was broken. Now I know there is no gorilla glass here, and can easier understand the price difference of Alcatel and my Galaxy S6.
The Google Pixel 6a will refuse to show my number no matter how much I try with different ways. The service provider says its Pixels setting problem and not theirs. Any workabout to it ??? Thanks in Advance
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I don't know if it is the same problem as I have had in the past, But
Not all sim card have your phone number saved to them.
What I had to do was put my sim card into my daughter's iPhone and save my phone number back to my own sim card, and then my own phone could see my number.
Google search should tell you how to do that. Good Luck. It's well past time that android should have added that!
What?
Settings/About phone/Phone number (sim slot 1)
Settings/About phone/Phone number (sim slot 2)
If it doesn't show, reboot your phone.
AndyBury said:
I don't know if it is the same problem as I have had in the past, But
Not all sim card have your phone number saved to them.
What I had to do was put my sim card into my daughter's iPhone and save my phone number back to my own sim card, and then my own phone could see my number.
Google search should tell you how to do that. Good Luck. It's well past time that android should have added that!
Click to expand...
Click to collapse
I tried. It is not happening
You could ask a local mobile phone shop just to check your number is saved to your sim card. I think most would help.
subbaak1968 said:
I tried. It is not happening
Click to expand...
Click to collapse
Call your provider and work it through with them. They'll need the IMEI from the phone or the box you got it in. They need to register that IMEI with your phone number. It happened to me with my eSim and finally they figured it out but it took the second tier support guy.
bobby janow said:
Call your provider and work it through with them. They'll need the IMEI from the phone or the box you got it in. They need to register that IMEI with your phone number. It happened to me with my eSim and finally they figured it out but it took the second tier support guy.
Click to expand...
Click to collapse
I called operator. They say its activated properly from their side. I replaced sim. Still the pixel 6a is showing my sim as unknown although all services like call in/out, sms in/out and internet is working fine. Even the person whom I am ringing is getting my number correctly. Its just the phone and its strange why it is showing other sim number when inserted but not this number