Samsung_IhNOkui
Beginner Level 2
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Galaxy M
Not have VOLTE services in M31 phone give updates to work these services 

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4 Comments
vishallote1989
Active Level 8
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Galaxy M
It depends on your Network operator. Not all areas are covered by operators to work as VOLTE. You need to check with your operator.
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Samsung_IhNOkui
Beginner Level 2
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Galaxy M
my areas have volte service with other mobiles
m31 doesn't support
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AMPK
Expert Level 2
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Galaxy M
4G works or not. As 2100mhrs works in this mobile.
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Samsung_IhNOkui
Beginner Level 2
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Galaxy M
4G working
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