Many Android phones like Samsung, Xiaomi has built in feature of blocking wildcard prefix phone numbers. But you need to use 3rd party app on iPhone. It’s easy and effective. I am using for years.
Simple Call Blocker
Simple Call Blocker is a utility that lets you block unwanted calls to your iPhone.
It allows you to block individual numbers, or ranges of numbers.
You may also add individual numbers or ranges of numbers to the Allow List, so that they will not be blocked by this app, even if they are in the Block List. Optionally, you may also allow all of your phone’s contacts.
## Does the app contain a list of known phone spammers to block?
No. Simple Call Blocker does not provide or maintain a known spammers blacklist. There are several other iOS call blockers that do, which you can use for free, if that feature is important to you. You may use Simple Call Blocker in conjunction with one of those other apps to blacklist additional numbers.
## Why would I use this app?
1. Simple Call Blocker allows you to block a range of phone numbers, to help prevent “neighbor spam”, for free. Other apps may let you blacklist individual phone numbers, but require an in-app purchase or paid subscription to block ranges of numbers.
2. Simple Call Blocker does not collect your personal information. You do not need to provide it access to your contacts unless you with to enable the “allow all contacts” option. In contrast, some call blockers require a subscription or even a login to their web service in order to work.
3. Simple Call Blocker is designed to be very simple and reliable. In contrast, with many call blockers, it is hard to determine how many numbers are in the blacklist, whether or not the “Call Directory app extension” is loaded, and so on.
Simple Call Blocker does not collect any of your information, period. No data within the app or accessed by the app is ever transmitted to the developer.