Yolmo
Active Level 1
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Galaxy M
I formatted my phone as suggested by customer support but no use. I even changed Sim and network provider. The very sim works first class in my daughter's  M01. What should I do as lockdown is implemented.? My previous J7 max was much better handset than this one. 
12 Comments
SubhankarRout
Active Level 8
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Galaxy M
If you're facing internet speed issue then you can probably try changing the APN settings.

Most suitable settings for your phone, you can get it from your operator customer care service.

If that doesn't work then you'll have to wait for further updates from Samsung.

Screenshot_20210516-211523_Call settings_77053.jpg

Yolmo
Active Level 1
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Galaxy M
I have tried it friend. Thank you. 🙏
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Faixu
Active Level 3
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Galaxy M
Same issue here..
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punshu
Active Level 7
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Galaxy M
M21 is a useless device
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Yolmo
Active Level 1
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Galaxy M
Agreed
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Yolmo
Active Level 1
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Galaxy M
Any feedback from Samsung?
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lucifer638r
Active Level 4
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Galaxy M
Good thing about m21 are display and battery life, all else are bad
venom
Expert Level 1
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Galaxy M
Dont talk rubbish...if u don't know just keep silent..literally everything in m21 from A to Z is top notch..its one of the most successful midrangers alongside m31 that Samsung has ever produced...
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lucifer638r
Active Level 4
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Galaxy M
Let's clear something up
Just after 2 weeks my camera stops working, then battery charging increases.
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