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Hi , My IPad 2 is completely broken , the dock connector is useless , and the screen doesn’t work . and i have a few pictures i want to get back . so can you please tell me how to retrieve them . p.s - the update of the device is IOS 7

Sadly, unless you can connect your iPad to a WiFi network to sync with your iCloud account what ever is still on your iPad will not be accessible. If you’ve been good in backing up your iPad up to iCloud then you can use another system to access your stuff off of it. Here’s how: How to Download Photos from iCloud to Mac or Windows PC the Easy Way

As @danj suggests, if you have a good backup… If you don’t have a backup, the it depends on how much value you place in the lost data. What do you mean by completely broken? A good shop can put on a temporary digitizer and LCD and install a new charge port. That may be enough to recover the data. You could do this yourself as well but the risk is higher . If the logic board has additional damage, then it will require some troubleshooting and additional cost. So this is not impossible, it’s just a question of how much money you are willing to spend without a guarantee of success.