The first & most obvious applies only to phones under warranty, (another reason why the extended warranty is always a good deal on mobile phones) will be always to go into a local shop and also have the device's screen mended at no cost.
If this is simply not an option for you, you could look at looking around for Apple iphone replacement screen services. You won't find new name ones, but when you take a look on eBay and find a trader with lots of positive feedback you may feel quite confident in buying an iphone.
The next thing to do is to check at a few of the numerous tech blogs providing detailed instructions on replacing your specific phone model's screen.
For virtually every phone version released in the past five years, there'll be multiple steps by step guides available to you, together with pictures and a set of tools you may need – even though when it comes to cellular phones it is probable you will only be asked to find a screwdriver to fit.
Your third option is also brought to you by the internet; there are a lot of shops around Dubai that will fix your phone for a very reasonable rate even if it's not under warranty.
Even though this might not inspire confidence, your cell phone is useless with a broken screen and provided you pick a shop that's been in business for at least a year, they will find a way to repair it for you personally.