Yup “iPhone needs to cool down” just syncing the day’s iCloud Photos while on the exact same MagSafe charger on my nightstand is now a regular thing on the 15PM, never was with the 14PM.
“Charging On Hold” for the same reasons.
And, it’s fall and temps are easily 10-15 degrees cooler and my home windows are still open.
The Titanium has provided literally zero benefit for me and is pure vanity IMO with big downsides on thermal and durability of the finish and drop performance (big deal, some fraction of an ounce was removed….”I wish my iPhone was 0.4 oz lighter” is never something I ever said, but I have frequently said “man, I wish this thing wouldn’t throttle so easily”).