We know that a mobile manufacture inckudes several parts to be very good for effcetive working of any phone .power bank should be very accurate a s it makes the people to use that phone for a long duration of period.using the screen gaurd to protect the screen from damages and water sprinkles.having your phone with cover to protect it from the damages. The cover entirely protects when it fell down.A good speaker headset helps your pone tovretain for a long period.