albertlee
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No need app, it's within Phone setting, see: http://i.imgur.com/ROq9sRW.png
How is this applicable given that slot 2 only support 2g network?
No need app, it's within Phone setting, see: http://i.imgur.com/ROq9sRW.png
How is this applicable given that slot 2 only support 2g network?
albertlee wrote:
Is there an app that can switch 3g function between the SIM slot?
Your original question did not specify which slot.
For Redmi1, slot2 max capability only 2g, setting to turn 3g not available and not possible. Thus, above setting only applicable for slot1.

You inserted your SIM card on which slot?Hi,
Hope some expert can help :
I cannot get internet/data on 3G.
I can get when i select "2G only"
Phone is Redmi 1S:
Model HM1S
Andriod ver: 4.4.4 KTU84P
Miui Ver: Miui Global 8.2 Stable 8.2.1.0
Think was working on 3G when on earlier Miui version (6?)
Thanks for any help. Tmr no 2G.![]()
Mobile broadband card in slot 1You inserted your SIM card on which slot?
Slot 2 only support 2G.

So your mobile broadband SIM on SIM1 can only receive 2G signal now after updating to MIUI 8.2?Mobile broadband card in slot 1
Pre paid voice in slot 2.
So your mobile broadband SIM on SIM1 can only receive 2G signal now after updating to MIUI 8.2?
'E' means EDGE connectivity, which is basically 2.5G network. Both 2.5G and 2G will be fully shutting down after 18 April.Think it happened few updates ago. Didnt bother then as i could use when set to '2G only'.
Using mainly for bus info, Whatsapp and simple browsing. No games or videos.
But now, with impending closure of 2G, will need to set to 3G (can still use set at 2G, Letter next to reception strength shows E).
When set to '3G' or 'Prefer 3G' , says "no internet connection."
Letter next to reception signal strength goes from H+ to H then blank.
Thanks for help, not well versed in using smart phones.
'E' means EDGE connectivity, which is basically 2.5G network. Both 2.5G and 2G will be fully shutting down after 18 April.
Maybe you should consider upgrading your Redmi 1S, since it only support 4G+2G and the SIM2 slot only support 2G which will render it useless soon.
I also use two Sims. Can someone advise which are the xiaomi phones that cannot be used for second Sim anymore? Find the specs so ambiguous
Sent from OPPO X9009 using GAGT
Can only use in SIM1 slot because it's the only slot that support 3G.My parent using the redmi, i bought a new 3G simcard, can't use on this phone. Use the simcard on the other phone and it is working.
Came to this thread, mean slot 1 is 4G, slot 2 is 2G. Mean the 3G simcard i just bought cannot be use on this phone anymore right.![]()