Answer Which phone has the longest battery life?

01 Battery per charge, by the EU energy label34

Since June 2025 every phone placed on the EU market carries an energy label with a battery endurance figure in hours, tested under Commission Delegated Regulation (EU) 2023/1669. One method, one figure, every maker — the like-for-like column. Phones that went on sale before the label are not in this table because no such figure exists for them.

02 Claimed video playback, by the maker’s own claim32

Each maker’s “up to N hours” figure, as printed on its own spec page. These are not comparable across makers: Apple, Samsung and Xiaomi each test at a brightness, a file and a set of conditions of their own choosing, and none publishes enough of the method for the figures to be put on one scale. Read this table within a maker, not across it.

03 How to read the two tables

The EU label is the only like-for-like figure: one regulation, one test, every phone sold in the EU since June 2025, and the figure comes from the label itself rather than from a maker’s marketing page. The maker claims are each maker’s own test of its own phone and are not comparable across makers; a Samsung figure and an Apple figure in that table were arrived at differently, and the gap between them says nothing that a buyer can act on. Neither table is a measurement this site made. The ordering is the whole of the answer: no score, no weighting, and no phone declared best.

04 Biggest batteries, in mAh54

A battery capacity is published for 54 of the 55 phones. Largest first; the largest is 7,000 mAh. Capacity is what the cell holds, not how long it lasts: the tables above are the endurance figures.

No capacity on file for 1 phone:

• Apple iPhone Duo — not published

05 Related questions

• Phone charging speeds: wired and wireless watts
• How many charge cycles do phone batteries last?
• Which smartwatch has the longest battery life?