Sunday
I lost my phone, activated a new sim card. Then found the phone, tried to activate the previous sim card. Entered many times, cleared browsing history, tried different browser, but keep getting the message: Sorry, the SIM you entered is not valid.
Monday
Toss out the old sim card. You cannot reactivate it again.
Once you activated a new sim card, the old sim card will no longer be useful. Please just use the new one
