Article summary
Decide when a LINE number needs rechecking after a customer changes devices, using the actual account transfer and contact history.
On Friday the customer says they bought a new phone. You need to confirm delivery on Monday. The useful clues are whether they still use your existing LINE conversation and whether the number registered to their account changed. If all you know is that the hardware changed, retain the previous screening result and its date. Wait for evidence about the current contact route.
Three messages you might see on Monday
“I'm signed in on the new phone. Keep using this LINE chat.” If the customer says this in your existing conversation, use that channel. The previous number check remains a dated observation. Separately record that the customer confirmed the same conversation on Monday. LINE supports transferring an existing account to another device.[1]
“I'm still transferring the account. I can't receive anything there yet.” For a delivery that needs confirmation today, use another route they have already confirmed. Record that the transfer is in progress. This tells you what to do today. It does not justify changing the earlier screening status to unregistered. When the transfer is complete, recheck the number if your work still depends on its registration.
“Please use this new mobile number.” Record the new number separately and confirm whether it is their preferred LINE contact as well. LINE treats changing the registered number as a separate operation.[2] If you need its registration status, run the AppShai LINE registration check on the new number. Keep the previous result attached to the previous number.
Leave a timeline the next colleague can follow
An order can have two dates. One marks when you checked the full number. The other marks when a working conversation was confirmed. If the number checked as registered last Thursday and the customer confirmed delivery in the existing chat on Monday, keep both records. If the customer changes their number on Tuesday, add a new number record. The next person can see what changed and why only one line needed checking.
A general report that customers have changed phones rarely calls for rerunning a whole list. Start with the orders in progress and the contacts who have told you that something relevant changed.
Sources
- LINE Help Center · Account transfer guide · Using an existing account on a replacement device.
- LINE Help Center · Checking or changing your phone number · Changing the registered number.
