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London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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@JonD
Edit. This only lasted 4/5 days then back to defective battery. Oh well.
iPhone 13 Pro battery strangeness update. Draining the battery all the way until it turns itself off, and then charging again seems to have worked. Pretty much the same battery life as before I noticed the cliff edge situation, and the battery level decreases and increases linearly through the previously problematic 30-50% range. Defo worth a try if anyone else is experiencing battery issues.