Take a hot air gun, a flat sharp knife and let's go. Battery out! Heats the old broken glass to the bonding surfaces and levers of the top of the unit forth slowly. Be sure to start at the top speakers, as below the touch sensors with glue on glass! Old display carefully open towards mobile bottom edge and the knife tip Carefully pry off the contact strip without injuring the touch sensors. All stick adhesive residue remove the outer edges of LCD and and the enclosed adhesive template. The two push buttons with double-sided tape to thin their old place on the device stuck again. LCD stick thoroughly with alcohol or the like clean and new glass. Heat now again with the hair dryer and press evenly. Battery pure, lid on, finished.