While apps provide a simple and easy means of accessing great content and services, it's important to be aware of how to use them safely and securely.
Please tell us what you want to complain about. If Ofcom can’t deal with your complaint, we’ll tell you who you should contact.
If you’re confused by call charges or don’t know your 03 from your 0845 numbers, then we have the perfect guide for you.
If you have a cordless landline phone, it's unlikely to work in a power cut, even if it's fully charged. Find out more.