Hi.
Some known remedies are to remove your Sim Card and give it a clean then re insert.
Also try turning off 3G and to go on 2g to see if it improves.
Although your Internet will be slowed down.
Try your sim in another phone to test out both the sim and current phone your using.
Even tho your service status is showing fine you can still report the mast by ringing 202 for contract customers or 4445 for payg.
Are others near you in 02 having the same issue, if so tell 02 in the phone call.
If your services still do not return then another option is to pick up a correct sized blank SIM card from an 02 High-Street Store, and perform the sim swap procedure in-store, or carry out the process yourself at home.
http://swapmysim.o2.co.uk/02 cover themselves in t&c's regarding coverage.
2.1 The Service isn’t available everywhere in the United Kingdom. It isn’t available in all other countries. It may be restricted to certain areas of those countries where it is available. Not all Mobile Phones will be able to receive the Service. We may not provide the Service to Equipment that is not able to receive the Service or is not approved by us. Some Equipment facilities may be available at a later date and additional charges may apply.
2.2 The Service isn’t fault-free; a range of different geographic, atmospheric or other conditions or circumstances beyond our control can impair it. For instance, coverage is affected by things like the thickness of the walls of the building you’re in. It might also depend on how many people near you are trying to use the Service at the same time. For more information about the things that affect coverage and data speeds, please look at the dedicated Network pages of our Website at o2.co.uk/network. You’re entitled to the quality of service generally given by a competent mobile telecommunications service provider, using its reasonable skill and care. We may carry out upgrades, repairs and maintenance works to our network from time to time. Sometimes technical issues or outages on our network can occur. If something goes wrong, we’ll try to fix it quickly.
