iphone - problems with Apple BLTE-transfer sample app -

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my installation of apple's btle-transfer app behaving flaky, on brand new ipads. have googled , not found solution.

i installed ios app apple btle-transfer v1.0 unmodified, using xcode 4.6.2, onto four, brand-new ipad mini's gen4 purchased apple store week ago, @ same time: 2 black colored ones ios v6.1.2 , 2 silver colored ones v6.1.3 2 v6.1.2 work best, flaky. 1 of v6.1.3 ones performs btle-transfer app transfers , then. , 2nd v6.1.3 never performs btle-transfer app transfers. no other bluetooth devices running.

but btle transfer fails. if 1 ipad peripheral , rest central, none or 1 or 2 others ever receive. ipad #4 never sends or receives.

ipad #2 peripheral talks #1 central, , #3 central, never #4 central ipad #1 peri talks #2, never #4, never #3.

the problem follows hardware, identical mini's therefore slight timing difference in hardware btle app fails adapt to.

i've tried cycling power on ipads , starting app in various sequences. no bluetooth devices nearby (within 30ft.).

the latest status: central reports rssi range of -59 -39 db both brand new ipad mini's side side. , why fail connect.

i investigate further, , report solution here...

the solution remove -35 db limit in apple's "btle central peripheral transfer" sample code app. search -35 , delete 'if' , 'return'.

once remove that, works dandy 30 frickin feet away. sweet!!

i tested 'fleet' of 4 ipad mini's , iphone 5.

but wait, there's more grief: after few minutes, app won't transfer anymore until close it, restart device, , re-run app. there comments within app implying less robust.


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