Hello, KhalidAli.
Welcome to the Three Community.
It's unclear if you'd need a new phone or not. If it still receives software updates and security patches, it's unlikely being on a new phone would improve the security of your device. I'm not sure the moving of documents or web pages is something that malicious code would attempt to do, it doesn't seem like it would achieve anything for an attacker.
Spam calls and texts can be a real pain, but add blockers and anti virus will have no impact on them. There's no service that will prevent all spam callers from being able to call you. Services such as the Telephone Preference Service aim to prevent legitimate businesses from contacting you, but as spam callers are generally not following rules or laws, they can choose to call whoever they like. The best thing to do is to reject all calls from numbers you don't recognise. Some phones offer intelligent spam call filtering where they will attempt to stop spam calls reaching you, but these are not perfect either.
I've generally never found a need for anti virus on a phone, and in some cases have seen apps that claim to be anti virus but are actually just malware themselves. Regardless though, anti virus won't ever stop scammers from calling.
I'm not sure which annual subscription service to the ICO you are referring to, but I'm not aware of any services they provide that protect phones from spam callers, or malicious computer code. Perhaps you can shed some light on that for me?
You'll find that advice around what is right when it comes to your device is going to vary from person to person. It's good that you're being vigilant, and hopefully some of the other community members will have additional advice that might be useful to you.
Pete.
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