Tips

Does your phone keep turning off? In the middle of something and your phone goes brown bread on you?

A quick overview of international SIM cards. Why, where and how much. International SIM cards are typically a cheaper option in the EU, but outside of the EU, some mobile networks offer cheaper rates.

What is an International SIM Card?

It's a SIM card offering cheap international calls. Buy the SIM card and put it into your phone instead of your UK mobile network SIM card.

So you have a tri-band GSM mobile phone, but you don't know if you can use it in the country you are visiting. Use this Web site.

Mobile phone unlocking tips.

Mobile phone networks lock the mobile phones when you buy a phone on PAYG or with a contract. The phones are branded and customised by the mobile network. Locked phone = you can't insert and start using another mobile network's SIM card. It's a retention strategy.

Mobile networks sell PAYG phones cheaper knowing that you'll spend money using their network services.

The worst UK mobile phone network is?

52 popular mobile phone questions answered.

1. I have a mobile phone obsession. Do I need help?
Yes.

2. Someone has criticised my Apple iPhone. I got angry. Do I need help?
Yes.

Do lots of people search for mobile phone voucher codes at Google? Let's find out.

Photo: Chris Tait.

Yes. Get free Orange PAYG SIM cards. Here's how.

Get a free Orange SIM card by filling in a form at their Web site.

Get free T-Mobile PAYG SIM cards. No need to buy them.

Here are the rates:

Get free ringtones for your mobile phone. MP3 ringtones, polyphonic, real ringtones, bollywood, music, funny ringtones, quotes, song ringtones, cheap ringtones. Here's a list of the best free ringtone Web sites.

Here's a list of mobile phone forums.

Was browsing the 3 Mobile Web site and stumbled across a cute photo of a dog.

Are mobile phones safe to use in a thunderstorm?

Lots of sites list the features and mobile phone specifications of each phone they're reviewing, MobileSift included. But do you trust them?

What is Bluesnarfing?

Push Email - What is it?

Push-to-talk. What is it?

Do you need to prefix a country code when making international calls? It depends. Some examples.

For whatever reason, you might want to switch mobile network providers. Network providers include 3, o2, Orange, T-Mobile and Vodafone. Here are your options.

Nearly all new mobile phones work in the USA, but some still don't.

Mobile phones with touchscreens are all the rage right now, and will gradually become the most common mobile phone interface. Here are some reasons why touchscreens are fab.

Want to sell a phone on eBay? This one piece of advice could save you hundreds of pounds

Most mobile phone shops sell mobile phone insurance with their phones. Often, it's selected by default at checkout. But do you need phone insurance? Read on.

Get 4 free pay-as-you-go O2 SIM cards...

Here are a few camera phone tips.