Galaxy Note 10: How to Insert Sim Card Properly & Double Check - YouTube
Amazon.com: Bestdealing Note 10 Plus Dual SIM Card Tray Holder Replacement for Samsung Galaxy Note10+ Note10 Plus 6.8" SM-N975F SM-N975U N9750 with Needle (Not for Single Card Version) (Not for Note10) (Black) :
Samsung Galaxy Note 10 Plus 5g Sim Tray | Samsung Note 10 Plus Sim Card Tray - Sim - Aliexpress
OEM Single Dual SIM Card Tray Holder for Samsung Galaxy Note 10 Note 10+ Plus | eBay