dual sim mode on

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Samsung Galaxy Grand Duos

Samsung Galaxy smartphone featuring a large display , and large font size.

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The two sims are not working simultaneously. When one sim is on the other sim displays no service.

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Hi,

Have you proved that both SIM cards work and also that both SIM card slots work?

Here is a link which shows how it to set up various options for dual SIM operation. Hopefully this is of some help.

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Teeny Mar @teenymar Rep: 1 · Answer 1 · 2018-11-19T17:39:53-07:00

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No, this video doesn’t help because, I tried that many times but I cannot use both of my sim card in a dual sim phone.

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