The drawback outweigh the benefits .
a ) The location tech in the current iPhone is much quicker . No matter what chip , even SiRFstar chips in full - full-blooded GPSes take a while to interlock on . When using the very capable N95 , I ’d often tug across town or take the air halfway to my terminus before I ’d get signaling lock .
b ) I ’d never habituate an iPhone as a railroad car Global Positioning System . Not even with updated software . The amount of work and expertise that goes into a high - end , 5 + generation Garmin is some serious poppycock . The logic is all proprietary . It ’s not easy to do . And GPS antennas necessitate to be somewhat indicate . If it ’s on your dash , it needs to be on the back . If it ’s for walking , it needs to be on the front . Which is it ?

c ) stamp battery life-time gets sleep with when you keep the Global Positioning System on with constant update .
d ) These chips are n’t exactly small , although they have been known to fit out in thing like Suunto vigil . That operate to make this thing thicker ?
No thanks . Do n’t need it . I ’m fine with the current location technology . It works for walking and that ’s all I demand it for .

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