No sim

[Gemstone531986]

Hi I recently received a new tablet for mobile Internet. 

Unfortunately I have not received the sim.

The number is registered on my account, but I have no sim. 

[Bambino · Accepted solution]

@Gemstone531986 Call 0800 032 1402 from any phone. Instructions on how to download Skype to call 0800 numbers for free and other CS numbers are here: Guide: Coronavirus Community Help and Support 
When it comes to the reason you are calling, stay silent for 15 seconds and you will be taken to the keypad options.
Press 2 for Everything Else
Press 5 for More Options
Press 7 for Anything Else which will put you though to someone.
Say 'Upgrade', 'Lost/Stolen', or 'Fraud' if the suggestion above doesn't get you through.
Best time to call is 8 am.

[MI5]

@Gemstone531986 

Might be a silly question, but have you checked to see if the sim is already fitted in to the device?