Yes. Modern phones stop pulling full power once the battery hits 100%, so the real thing to watch is heat, not the charging itself.
This worry usually traces back to older battery chemistries and cheap chargers from years ago, where overcharging really could shorten battery life. Lithium-ion phones sold today are built with charge-management circuitry that makes that specific fear outdated.
What still matters is how you use the phone while it's plugged in, since heavy activity while charging is one of the few things that reliably generates extra heat.
Once a lithium-ion battery reaches full charge, the phone's charging circuit cuts the current to a trickle or stops entirely and only tops up occasionally to stay near 100%. Many phones also use adaptive or optimized charging, which deliberately slows the last stretch overnight so the battery spends less time sitting at a full charge.
Heat, not overnight duration, is what degrades lithium-ion battery capacity over time. Heavy gaming, video calls, or streaming while charging make both the processor and the charging circuit generate more heat simultaneously, which is the combination worth avoiding.
Checking messages, browsing briefly, or letting music play while charging generates minimal extra heat and is not a meaningful risk to modern batteries. It's sustained heavy use, not occasional light use, that makes a real difference.
Charging overnight and glancing at your phone occasionally is fine for a modern lithium-ion battery. Save the heavy gaming or long video calls for when it's not plugged in, since heat buildup, not charge duration, is what actually shortens battery life.
No, modern phones stop pulling full current once they hit 100% and only trickle-charge to maintain the level, so there's no true overcharging with a normal charger and cable.
Fast charging generates more heat over a shorter period, which can add slightly more wear over years of daily use, but it's a minor factor compared to consistently charging in hot conditions.
Not necessary with a modern phone and official charger — the charging circuit handles it safely. It's a habit some people keep for peace of mind rather than a real requirement.
Yes, poorly made chargers and cables are more likely to deliver inconsistent power or overheat, which is a bigger risk factor than overnight charging itself.