Here are some of my UK mobile phone sims. Don't worry, it is all pay as you go (not contract) sims!
SIMs are the soul of mobile phones, so it contains its identity - in this case, mobile phone number and its credit (if any).
Here is the list of what makes each SIMs special!?
If you top up by a certain amount, you get lots of texts free (£10 = 300texts).
Has cheap Europe roaming bolt on, 35p/min to make/receive calls.
With international bolt on, only 20p/min for UK - Japan call.
No GPRS internet/email via PC/iPAQ for pay as you go.
Video calls to Japan costs £1.50/min! Other networks only charge 50p/min.
15p/min for calls in UK to normal phones.
If you sign up for direct debit, international roaming is good value.
GPRS costs is the same in the UK while roaming. (ie cheap!)
Full internet/email GPRS for PC & iPAQs
No smtp setting for sending emails. You can sign up to pay as you go Virgin.net, and use that smtp: mail.virgin.net (have to dial up once in a while to keep it active)
Pay as you go GPRS capped at £1/day.
Full internet/email via GPRS/3G.
Has PAYG WiFi at T-mobile hotspots. 75p/10mins.
Coverage is patchy
No video calling on pay as you go.
Can send 30 texts/month free from Orange website.
Full internet/email GPRS.
International roaming GPRS not bad.
Network coverage not good at my house...
Very good coverage.
Vodafone stop the clock = Evening & weekends, pay for 3mins, talk for 1 hr.
Vodafone passport = Pay 75p/call, then the call cost is the same as in UK.
Call charges are more expensive than most.