What should I be careful about when inserting a SIM card?
Ensure that the card is correctly aligned and that the card tray is level when you insert it into your device. Do not use cut or modified SIM cards, as these may not be recognized and could damage the card tray. If your SIM card does not match your device, contact your carrier. (Page 3)
From the official Honor Tfy Lx3 X8 Dual Sim Smartphone manual, page 3
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