You can't see blocked messages from a number you've blocked on an iPhone, so you'll have to unblock that number if you want ...

You can change your phone number on WhatsApp whether you're still using the same phone, or you're using a new phone.

Similar to other messaging apps, Telegram uses your mobile number to create your account. If you have a new number and want to update it, you can easily change it in the Telegram app. It is free and ...

Change default iPhone and iPad apps under Settings > Apps > Default Apps. Options include browsers, messaging, contactless apps, and autofill setups for password managers. You can't pick a new default ...