Hi I have unlocked Focus. Everything works but some time when the phone switching from 3G to EDGE I've got a SIM error - there is nonetwork connection + if I enter call settings I see errors (could not receive parameters for call forwarding, SIM security, etc)
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I bought unlocked, sim free HD2 inserted the sim of my usual Mobilink network the phone wizards automatically configured the setttings but to my strange I cannot dial or receive phone calls, I am receiving and sending sms perfectly the phone GPRS working alright tried different methods of changing band but nothing is working to dial or receive voice call. In order to check if there is problem itself with the phone I tried different network (Ufone) sim and the phone is working perfectly without any problem so I am stuck that I cannot use my network which I normally use and I dont want to switch network, if somebody can help to fix this problem.
Hi there,
Just a few days ago i bought a LG Quantum, everything seem to be working fine until everyone told me why i didn't pickup their calls. I can make calls, the 3G it's working, I can receive sms, Wifi and BT working too.
It's SIM unlocked and working on Telcel Mexico (UMTS 850)
have you tried to turn of your mobile data connection?
for edge and gprs: they are only capable of one thing at a time data or calls.
3g already does both.
Yeah I tried that, I did downgrade to NoDo and now just shows "No Service", for a few seconds have service, I tried with another providers and shows the same behavior. Its not enough with the SIM unlocking? Maybe it doesnt have the XML of the provider or I must debrand? Anybody have an idea?
For the record, now im on movistar, with the sim working on a Samsung Focus shows "movistar", on the Quantum shows "movistar-movistar"
I'm running the G900FD Duos and need to continually switch between SIM1 and SIM2. I have to do this because the 2G signal in my area is non existent so when using SIM1 on 3G/4G the other SIM (which then uses 2G) won't receive any calls or texts.
I've tried in the unnecessarily confusing Samsung dual-sim settings to make this a one click operation but simply cannot fathom it out without endless clicking to and fro. I've also tried xShortcut to add a shortcut to the home screen to either switch between the two SIMs or swap 3G/4G connection from one SIM to another (and back) but again without success.
Does anyone know if this is even possible without a 15 click operation?
I've got a very weird issue with my Galaxy S8 (SM-G950FD)
After working fine for about 1.5 years on the network it suddenly wasn't able to make and receive calls anymore on the Lebara (Vodafone) network in Australia.
The issue spontaneously disappeared a few hours after it first surfaced but reappeared and has not gone away since.
Internet and Txt/MMS are working normally. But when someone calls me it goes straight to voicemail and when I call nothing happens for a minute or so and then it "disconnects" but no tone
When I go into the phone app and try to retrieve settings like caller ID and/or forwarding it gives the following error:
Failed to read data
Something went wrong. Check your
Sim Card or network connection,
then try again
When I insert the sim into an S7 it's working. When I insert the sim from the S7 into the S8 (Optus network) the S8 works as well.
I've performed a factory reset (without restoring the settings)
I've gotten a new sim and Lebara has ported the number to it but that didn't help
Being a dual sim I've tried using the shared sd/sim slot but same issue.. data/mms/txt working no voice.
I've tried copying the apn settings the S7 displays with the Lebara sim to the S8 but that didn't help either.
I've now used Odin to flash the phone back to the Oreo version with the December 2018 security update and that didn't help either.
Any other ideas?
Thanks
I've managed to narrow down the issue a bit.
Also went out to purchase a Vodafone Pre-paid sim. That one didn't work either at first but after some troubleshooting with support of Vodafone we've found out that the S8 doesn't connect to the 3G network of Vodafone Australia.
When I have the SIM of another provider in there and limited the network mode to 2G/3G autoconnect the phone just finds the 2 other networks on 3G (AFAIK 2G has been phased out).
I've tried to get into the advanced service mode but this doesn't seem to be possible anymore.
Is there a way to try to see which bands are active on the S8 and better yet enable them all?
I have the latest firmware update, and I'm using it with 2 SIMs; Sim #1 is a Google-Fi on roaming, and Sim #2 is the local default sim. I choose SIM 2 to be the default for everything (calls, SMSs, and data). However, I kept seeing the mobile for some reason switches the data to SIM 1, however, I disabled data roaming, and surprisingly, the mobile still randomly changes to SIM 1 (Google Fi) and also consume data!!