I don't see any sim slot on my samsung Galaxy tab 310 pls help me

SIM tray looks like it was supposed to have another SIM slot or SD sm slot Use eight phone numbers on one Dual SIM smartphone with hybrid slot - Octuple SIM adapter to have 8 SIM cards on one Android Dual SIM phone smartcard slot The dual SIM tray can have two nano SIMs or one of the sides can sport an Nano Memory card instead Huawei presented the NM card slot can takes up to 256GB

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