Having your number blocked can be very inconvenient, especially because many important accounts are connected to your phone number, such as bank accounts, social media, and other services that require phone verification.

To avoid your Tri number being blocked, it is important to understand the possible causes. Here are some common reasons why a Tri number may be blocked: 

Unusual Phone or SMS Usage 

This may include sending spam SMS, too many broadcast messages, or any activity suspected to be related to fraud or scams. 

No Credit Top-Up Until the Card Expiry (Prepaid) 

This often happens when customers forget to top up their credit because they rarely use calls or SMS nowadays. 

Unpaid Bills (Postpaid) 

If you are using a postpaid service, make sure to pay your monthly bill on time to avoid your number being blocked. 4. No Usage for 90 Consecutive Days If there is no activity for 90 consecutive days, your Tri number may be automatically blocked. Keeping your number active by regular usage or top-ups can help prevent this issue.