Exact model-family answer directory
Apple iPhone 13 Pro Max troubleshooting
Apple iPhone 13 Pro Max (A2484/A2641/A2643/A2644/A2645): battery health decline; the 120 Hz screen draws power; proMotion and Low Power Mode, and a fix for each symptom below.
- Battery health declineApple Community and MacRumors threads show iPhone 13 Pro Max owners watching battery health fall, several to the low 80s or below. Apple rates this battery for up to 80 percent capacity at 500 complete cycles, which a phone from 2021 has passed.
Apple iPhone 13 Pro Max battery drains too quickly
Open record Apple · storage fullApple iPhone 13 Pro Max storage is full or the device cannot install updates
Open record Apple · Wi-FiApple iPhone 13 Pro Max will not connect to Wi-Fi or keeps disconnecting
Open record Apple · biometric unlockApple iPhone 13 Pro Max biometric unlock is not working
Open record Apple · camera blurryApple iPhone 13 Pro Max camera is blurry, shakes or will not focus
Open record Apple · callsApple iPhone 13 Pro Max cannot make calls or send messages
Open record Apple · GPSApple iPhone 13 Pro Max GPS or location is inaccurate
Open record Apple · no serviceApple iPhone 13 Pro Max has no cellular service or data
Open record Apple · not syncingApple iPhone 13 Pro Max photos, contacts, messages or account data will not sync
Open record Apple · speakerApple iPhone 13 Pro Max speaker is quiet, distorted or has no sound
Open record Apple · BluetoothApple iPhone 13 Pro Max will not pair or stay connected over Bluetooth
Open recordConfirm the model first
Which units this covers, and how to tell yours is one of them
- Model numbers and patterns
- A2484/A2641/A2643/A2644/A2645
Published specification
What is true of this model and changes how you fix it
- The 120 Hz screen draws powerThe 6.7 inch ProMotion display uses real power, and on a tired battery that shows as a short day. Low Power Mode and lower brightness help; a new battery fixes it.
- ProMotion and Low Power ModeThe 120 Hz ProMotion screen drops to 60 Hz in Low Power Mode, so turning it on is the quickest way to stretch a tired battery through a day.
Manufacturer support for this product line. Apple Support — Apple product support. Official Apple model, operating-system, repair, connection and settings guidance.
Also read for this model. Apple Community — iPhone 13 Pro Max battery health decline; MacRumors Forums — iPhone 13 Pro/Max users: how's your battery health?; Apple — Maximizing battery performance and lifespan.
Exact questions
Questions that only have an answer for the Apple iPhone 13 Pro Max
Why is my iPhone 13 Pro Max battery draining so fast?+
Check Settings, Battery, Battery Health first. On a phone this age the battery is usually the cause; a replacement restores a full day, and Low Power Mode is the stopgap.
Why is my iPhone 13 Pro Max battery health under 80 percent?+
Apple designs the battery to keep up to 80 percent capacity at 500 complete charge cycles; a phone from 2021 has usually passed that, and a replacement restores it.