Try resetting your network settings first:
Settings - General - Reset - Network Settings Reset
If that doesn't help, power cycle your phone and ask your friend to power cycle her phone too.
Let us know what happens.
Thank you,
Dmitriy
Try resetting your network settings first:
Settings - General - Reset - Network Settings Reset
If that doesn't help, power cycle your phone and ask your friend to power cycle her phone too.
Let us know what happens.
Thank you,
Dmitriy