Verykool i650 - Manual (Page 57)

SIM card errors 1. The SIM card is dirty, clean it.
2. Reinstall the SIM card
3. The SIM card is damaged,
change one.
The Manufacture reserves the ultimate right for the interpretation of this
manual.
The Manufacture reserves the right for the changes in the technical
standards without advanced notice.
The Manufacture reserves the right for the changes in this manual without
further notice.
The Manufacture reserves the right for the changes in the technical
specification without advanced notice.
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