The responses that you received were in response to your specific question about accuracy of smart 'phones.Mtb tourer wrote: ↑25 Mar 2024, 5:40pm I see that the speed is zero, has the phone been sitting for a while and obtained an accurate position . Phone looses out when its asked to route find all day long. Phone is ok if it's only for 1/2 a day , more than that you will need a power pack.
Of course there are multiple other factors affecting the choice of smart 'phone or a dedicated device. This is discussed extensively in previous threads.
Jonathan