UK ONLY text to 999 just in case
For anybody who may not know there is an emergency call system which is worth having on your mobile phone, it is referred to as Emergency SMS.
Since 2009 it has been possible to send an SMS text to the emergency services on 999. The service was primarily aimed at deaf and speech impaired people, but it is not restricted to that subset of the population.
This is primarily aimed at Deaf / Blind but not restricted to that part of society. Anyone can register - you just never know.
Important A voice call to 999 must always be used in preference to a text. (This advice is from BT, who run the 999 and Emergency SMS functions.)
To use the service you must first register, it is a simple process;
1. Send the word "register" to 999
2. You will receive a message about the service
3. When you have read the message, reply with ‘yes’ (in a text message to 999)
4. You will receive a further message confirming registration, or that there has been a problem with registering your phone
At any time you can check whether your phone is registered by sending the word ‘register’ to 999. Similar systems are operated abroad.
To use the Service you just send a descriptive text to 999 and await a reply.
Do not assume that your message has been received until you receive a reply, which should be in 2 to 3 minutes. If you do not get a reply try repeatedly sending the message again. Maybe even riding down the lane to find better phone signal.
If you do not have a signal on your home network, you may not be able to send a text to 999 but in the background whilst waiting for a signal your phone should keep trying to send it via other phone carriers.