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Hello, Just a screen replacement won't do it. But save the phone maybe you find like a 10€ screen in the future and replace it then.

Hello, yes it is possible to switch display assembly. And it's something normal. For switching the display assembly look at the ifixit guide @coolpie123 linked.

Hello, no I it's not recommended to use this battery. And it isn't safe to battery is dangerous if damaged. Also now iPhone batteries are cheap. Link below. iPhone 5s Replacement Battery iPhone 5s Battery

Hello, answer is YES.

Hello, no you can't upgrade RAM on this product.

Hello, you need Phillips #000 Screwdriver. You can buy it at Ifixit and if you buy tools from Ifixit you gain lifetime warranty and for phone parts it's mostly 1 year. So if you are buying i advise Ifixit (links below). Also link for iPhone 6 LCD Shield Plate Replacement. iPhone 6 LCD Shield Plate Replacement: iPhone 6 のLCD シールドプレートの交換 Phillips #000 Screwdriver: Phillips #000 Screwdriver Or the whole toolkit: Essential Electronics Toolkit

Hello, no you can't replace the glass on this watch but if you could the glass and the tools you would need to fix it would be more than 20$. So you can buy a new one if it's so bad (link below) Smartwatch DZ09: https://www.amazon.com/GZDL-Bluetooth-Smartwatch-Support-Android/dp/B01FX74J74/ref=sr_1_3?ie=UTF8...-3&keywords=DZ09

Hello, if you buy this screen (down below) you get lifetime warranty. To save your time you can plug it in but don't put together the whole screen if it doesn't work so you can have a easier job putting it back in the box it came in to RMA it because they will get you a new one... Ifixit has a good support so if you buy this product and have a problems you can contact them by email or phone. Screen you want to buy: MacBook Pro 13" Unibody LCD Panel Guide to switch screen: MacBook Unibody Model A1342 LCD Replacement

Hello, there are cheaper options of screen but it's not same quality. And also ifixit lcd screen is under lifetime warranty. And if you look it's not so expensive because shipping is free and also you can buy one with tools and other with just screen=95$. Or just two screen and iopener tool kit. Also included guide down below. iPhone 5c LCD Screen: iPhone 5c Screen iOpener tool kit: iOpener Guide to follow if you will repair it yourself: iPhone 5c のフロントパネルの交換 If you are looking for cheap lcd's you can find them on ebay, aliexpress, alibaba...

Hello, yes you can upgrade the storage by simply buying 2.5 inch to 3.5 inch disc tray and mounting that instead of the hard drive down below. https://d3nevzfk7ii3be.cloudfront.net/ig... https://www.ebay.com/itm/2-5-inch-to-3-5-inch-Metal-Frame-SSD-Bracket-Desktop-PC-HDD-Drive-Tray/121941368780?hash=item1c64459fcc:g:... Hope it helps