no internet when switching to 2g - Galaxy S 4 Q&A, Help & Troubleshooting

Does any one have the same trouble as mine? When i switched from wcdma to gsm i could not use internet anymore. Im currently on three UK. And it is I9505. What could the solution be?

Is it cos three don't have a 2g network?

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I run the unlock exe file on my XDA. Now it accepts Vodafone, Orange, T-Mobile but not the 3 network. Any idea why ?
Erm because "3" is literally as it sounds. 3rd Generation. Orange/T-mobile etc etc are all 2G. Yes they have all released/releasing 3G networks/phones, but your device is a 2G phone. It won't support 3G SIM cards. Sorry.
well the early 3g sims did work in 2g phones of cause not on the 3g network then it would just roam 2g networks like 3g phones does when they cant get a 3g signal
but 3gblocked it in later models as far as i heard

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3g problem

hy.i have a android note 2(feiteng h7189) dual sim phone.the problem is that i can't get acces to 3g network.all my setings are god but still nothing.on internet i only have 2g conection.for vodafone when i put network on 'wcdma only' i loose signal.on orange i can use wcdma but internet is 2g only.i use reset,service mode but nothing worked.if anyone can help pls...Thanks
casian85 said:
hy.i have a android note 2(feiteng h7189) dual sim phone.the problem is that i can't get acces to 3g network.all my setings are god but still nothing.on internet i only have 2g conection.for vodafone when i put network on 'wcdma only' i loose signal.on orange i can use wcdma but internet is 2g only.i use reset,service mode but nothing worked.if anyone can help pls...Thanks
Click to expand...
Click to collapse
First of all, if you haven't done it already, put the "gsm/wcdma" (or something similar, it has to have both of them anyway) setting on mobile networks. If you still can't get 3g, try searching for all available mobile networks. When the search ends, select a 3g network according to your carrier (e.g. vodafone 3g if your sim is vodafone).
i think the problem is with with band.in phone description it sais GSM 850/900/1800/1900MHz(2G) - WCDMA 850/2100MHz(3G),but in mtk engineer i can't select wcdma 900 and wcdma 2100 doesn't apear(band for 3g for vodafone) so i think this is motive i can't conect 3g.can i do somthing about that??

[Q] 3G not properly working on SM-N910C

I hope that somebody can help me. I live in The Netherlands and have Vodafone as provider and do not have 4g but only 3g as this is an old flat fee corporate account. If I set the Network mode on automatic (WCDMA/GSM) the phone will not connect to UMTS (3g) but only on GSM (Edge and GPRS) for data connections.
When I manually force (WCDMA only) Umts will work. Does anybody know how to fix this? I have the latest firmware. I prefer auto-switching as in some areas only GSM networks will be available. My iPhone 6 and Nexus 6 do not have this problem and will connect automatic to both networks, GSM when I make a call and UMTS if I need data. Could this be a modem issue? I already repalced my simcard and replaced my Note 4, both have the same issue. This is the Exynos and not the Snapdragon version.

[Q] D802 Not connecting network

My new LG G2 D802 seems to only want to conect to GSM, if I have it set to any other setting like GSM/Wcda auto, or LTE etc it wont even connect to GSM let alone the other networks? To be clear i can use the phone set to GSM, but not when set to the other settings, just keeps searching for network
I am in New Zealand on Vodafone network which is
2G - 900/ 1800 MHz GSM, GPRS
3G - 900/ 2100 MHz UMTS, HSPA, HSPA+, DC-HSPA+
4G - 1800 MHz LTE
so I think the phone should connect shouldnt it? I am in 3G/WCDA coverage (not in 4g currently to try)
Any ideas?
the phone is stock rom, rooted, Xposed etc, Kitkat 4.4.2
Thanks
Edit, I just clicked network operators and searched and it came up with Vodafone Gsm which i have selected. So i take it my phone cant see a 3g network?
I think I have solved it. I went into the hidden menu and changed the modem settings to my carriers frequency instead of auto. So fingers crossed. II havedone a reboot and it is still working too.
So I had 3g for the day or so and then its gone again, I tried my wifes sim card which is on a different network and seemed to work, so i will get a new sim card for myself and hopefully be ok. my current sim card works ok in her phone, it just struggles to find 3g in mine for some reason.
Got a new sim card now but it still struggle to find 3g maybe because I'm not in a main town centre but I should still have service here as I am in there coverage area and my wife gets coverage on her phone
Tried updating to lollipop but problemremains. It is disconnecting maybe because of poor 3g reception but then struggles to connect to 2g again. Only solution to have working phone is ro have it set on gsm only all the time. Not good

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