if your bill is more then expected this month its because 02 have started to send things such as emails, long texts, contact cards & emoticans as picture messages then charge for this. They havent told anyone but if you complain you are entitled to 50% off as a goodwill gesture.
From their website-
If you?re using a Smartphone to send text messages to more than one person at the same time, you could be charged the cost of sending an MMS (picture message)
Below is a list of reasons why a text message is sent as a MMS (picture message) and how you can avoid this.
- Text messages to email addresses - Don?t use an email address in the ?To? box when creating a text message.
- Text messages sent to multiple contacts which include email addresses and mobile numbers ? Send to mobile numbers only. If you need to send to an email address send it separately.
- Using subject headers ? Don?t use subject headers
- Contact cards ? Don?t send contact cards
- Long Messages ? If you?re sending a message with more than 360 characters, send it as 2 messages. There is a character counter on most phones that you can see when you?re writing a text message.
- Smiley faces or emoticons ? Don?t use smiley faces or emoticons.
- Sending to more than 25 people ? Try breaking the message up into smaller groups
- Attachments (pictures, videos, sounds, music, drawings and locations) ? Don?t add any attachments to the text message.
Note ? Your phone will tell you if it is changing your message to an MMS (picture message). Keep your eye out for it and don?t ignore it.
ALSO-If the contacts on your Facebook account are the same as in your iPhone address book, your iPhone will merge the two together. If you include one of these contacts in a message that goes to more than one person it will change the message to an MMS (picture message).
I THINK O2 ARE BEING VERY UNREASONABLE but like many others I am locked into a contract 