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@bujalarab
I'm using the USB charge of B&M Luxos U with a Velogical dynamo. In general it charges my phone from 16km/hour. Pretty pleased and using the phone in airplane mode and GPS it can keep it at constant level, but depends a lot on the profile of the ride. If the phone is fully operational but without GPS active it is doing better. GPS, wi-fi and searching for signal masts are a major sourse of battery consumption.
This might be helpful https://www.cyclingabout.com/list-of-hub-dynamo-power-supplies-for-usb-devices/. The cycle2charge option seems interesting at a decent price.