Why does my Android phone detects sim card but there is no signal but the same sim card is working fine in other phones? - Quora
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Samsung Galaxy S23 5G / Galaxy S23+ 5G / Galaxy S23 Ultra 5G (SM-S911U/SM-S916U/SM-S918U) - Insert or Remove SIM Card - AT&T
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Permanently Remove the 'No SIM Card Inserted' Notification on Your Samsung Galaxy — No Root Needed « Android :: Gadget Hacks
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