Have tried to restore settings due to problems, now Iphone shows Sim Failure, how can I get back to using my phone? Please help, its a business phone. :(

Hi, I have tried to restore settings on my Iphone due to problems I was having with the phone cutting out when talking on the phone, now Iphone shows Sim Failure, how can I get back to using my phone? Please help, its a business phone.

Hi jclarke64, 
Thank you for contributing to the Apple Support Communities. 
I'm sorry to hear that your iPhone 4s was lost, and glad that you were able to upgrade. 
If your iPhone 4s was backed up to iCloud or using iTunes, you can restore the backed up data to your new phone. 
See the steps in this article for help with restoring from a backup:
Back up and restore your iPhone, iPad, or iPod touch using iCloud or iTunes - Apple Support
All the best,
Jeremy 

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