need help for SMS issue

[dryoussef21]

I am chating using SMS ..but everytime I restart my phone ...new SMSs open a new thread even with the same friend ....any help??!

Knowing that my friend had same device but without thid issue ...

 

[Laura Knotek]

Does your friend have the same carrier as you?

 

[dryoussef21]

Does your friend have the same carrier as you?

Yes , lumia 920 but she hasn't same issue :/