Vodafone will also unlock its handsets, though at a potentially higher cost. You can generally get a free unlock if you're on contract-or if you purchased your phone more than 12 months ago. Otherwise it will cost around Â£20. Sometimes the network will unlock your phone in just one day, but it can take up to two weeks.EE is a little bit stricter with its unlocking terms.therwise it will cost around Â£20. Sometimes the network will unlock your phone in just one day, but it can take up to two weeks. EE is a little bit stricter with its unlocking terms.
1 Whitening Strips â These resemble clear adhesive bandages that are stuck onto the teeth and left there usually for 30 minutes at a time, twice a day for a week or two. 2  Brush-On Whitening â These gels are painted directly onto the teeth with a small brush and sometimes left overnight.
Six Methods: Whitening toothpaste Whitening trays Whitening strips Whitening pens Whiten Your Teeth at the Dentist's Office Keep Your Teeth White After Treatment. Teeth become less white over time as the mineral structure of your teeth changes and as your enamel becomes more porous.