Apple iPhone 11 battery drains too quickly

6.1-inch all-screen LCD with IPS technology, at 1792-by-828 at 326 ppi. That matters more than it sounds — a procedure written for a different size in the same line puts controls in different places, and gestures that depend on reach behave differently.

Lightning. A USB-C cable will not fit at all, which is the usual explanation when a charger that works on a newer iPhone in the same household does nothing here. Lightning cables also fail internally at the strain point, so a cable swap is the first test for slow or intermittent charging.

Face ID. It is deliberately quick to refuse when not confident, which is why darkness, strong backlight, unusual angles and lying down all reduce it — and why a case lip or a screen protector over the sensor area disables it entirely.

The A13 Bionic. This determines how long the model keeps getting iOS updates, and it is the reason an app can drop support for this iPhone while running fine on a newer one — a support-window matter rather than a fault to troubleshoot.

64GB/128GB/256GB. The 64GB tier is the single most common cause of storage trouble on this model, and it is why an update can refuse with what looks like enough space free — installation needs room to unpack and stage as well as to store.

No — water resistant, rated IP68, which Apple specifies as a maximum depth of 6 metres for up to 30 minutes under IEC standard 60529. That is a laboratory figure for a new device in fresh water; it degrades with age, drops and seal disturbance, and liquid damage is not warranted.

Yes, alongside a physical nano-SIM. Bear in mind that an eSIM does not move with the handset the way a plastic SIM does — a phone swap, a reset or a repair can leave the profile behind, and restoring it is a carrier action.

Wi-Fi 6 with 2x2 MIMO. That is worth knowing before blaming the phone for slower Wi-Fi than a newer device on the same network — a router running a newer standard falls back to what the phone supports rather than refusing it, so the difference is specification rather than fault.

Bluetooth 5.0. Version affects range, reconnection behaviour and which accessory features are available. A newer accessory paired here operates at this version's capabilities rather than failing, which is regularly mistaken for a pairing fault when the accessory simply cannot do everything it does on a newer phone.

625 nits maximum brightness (typical). Brightness is among the largest single consumers of battery, so outdoor use at full brightness costs real runtime — and poor outdoor readability on this model is usually this figure rather than a display fault.

Apple rates it at up to 17 hours of video playback. Judge your runtime against that figure and your own history rather than against a different iPhone — the rating varies widely across this line.

4K video recording at 24, 25, 30 or 60 fps. Resolution and frame rate are the dominant factor in how fast video fills storage, and they push the phone hardest thermally — sustained high-frame-rate recording is the most common reason a camera stops mid-take.

Not meaningfully. This model uses an LCD panel, which backlights the whole screen regardless of what is displayed. Dark mode only saves real power on the OLED iPhones, where black pixels are switched off entirely.

Not meaningfully. This model has an LCD panel, which backlights the whole screen regardless of what is displayed, so a dark interface costs the same as a bright one. Brightness itself is the only display setting that changes consumption here.

The phone already knows. Open the battery usage breakdown and sort by consumption — it lists screen, system and every app, with background time separated from foreground. Read it before changing anything, because changing settings resets the very data that would have told you the answer.

That depends entirely on what was running, not on the number. Overnight drain with everything idle should be small; overnight drain with an app holding a location lock or a mail account polling aggressively will not be. The breakdown for those hours tells you which you had.

No. Force-closing apps you use regularly makes battery life slightly worse on both major platforms — a cold start costs more than a suspended app does. The apps worth acting on are the ones the battery screen names, and the action is restricting or removing them, not swiping them away.

Almost certainly signal. A phone that cannot find good service transmits at full power continuously, which is one of the most expensive things it can do. Comparing drain at the office against a strong-signal location for a similar period confirms it, and Wi-Fi calling is the practical fix.

Give it a few full cycles. Photo libraries, search indexes and app optimisations all rebuild once after a major update and consume heavily while they do. Judging battery life in the first days measures the re-indexing rather than the phone.

Read the phone's own battery health or maximum capacity figure — it is a published number, not something to infer. Gradual decline over a year with unchanged usage, plus a low capacity figure, is genuine wear. An abrupt change with normal capacity is not.

Modern phones manage charging themselves and both major platforms hold at a lower state overnight when they can predict your routine. Heat matters far more than duration — charging under a pillow or a duvet does real, permanent damage where an extra four hours at 100% does very little.

Usually background location. 'Always' is dramatically more expensive than 'while using', apps request it at install time when nobody is reading, and for most apps the downgrade costs nothing you would notice. After that, screen brightness and refresh rate.

That is not a drain problem — it is a battery that can no longer hold voltage under load, and it will get worse. It is a service matter rather than something to configure, and continuing to run it down repeatedly does not help.

On an OLED screen it genuinely reduces display consumption, because black pixels are switched off rather than lit. On an LCD it does almost nothing. Either way it only matters if the battery screen shows the display as the dominant consumer.

By drain per hour of screen-on time, across a comparable day. Percentage per calendar day is meaningless when one day involved four hours of use and the next involved twenty minutes — and that difference is larger than almost any setting you could change.

No. It is scoped to A2111/A2221/A2223. Apple iPhone family; connector, modem, camera, biometric and iOS eligibility vary by exact model.

Record the complete model identifier, exact message or indicator, software/firmware where visible, the operating stage and what still works.

A reset can erase accounts, networks, maps, schedules or preferences without distinguishing battery drain, battery life. The ordered checks preserve that evidence.

Stop using a swollen, hot, punctured or physically damaged battery.