iPhone4S vs. iPhone5

RE: iPhone4S vs. iPhone5

Nathan — Fri, 21 Nov 2014 07:27:00 GMT

Hi Dan,

I've done extensive testing on a device we are developing, and we have absolutely got the same issue. The Iphone 5 performs much worse than the 4S. The 6 is better than the 5. Even the examples such as ble_hrs etc experience drops (whether compiled in keil or eclipse, or even after services are stripped out), particularly with a failure to make the initial connection. The problem seems to get worse the more the device is doing i.e. more timer interrupts and high frequency tasks.

Edit: using nrf51822 chip on custom board, s110 soft device 7.1, SDK 6.1.

To the developer community, is there some implementation to avoid this?

Nathan

RE: iPhone4S vs. iPhone5

Pål Håland — Wed, 02 Oct 2013 05:27:51 GMT

While working with the Bluetooth, can you try to turn off the Wifi (just to see if that have any difference)

RE: iPhone4S vs. iPhone5

Marc Nicholas — Tue, 01 Oct 2013 14:50:02 GMT

Hi Dan,

I'm not 100% sure what you're asking? Details of physicals devices? Other than being an iPhone 4S and iPhone 5?

-m

RE: iPhone4S vs. iPhone5

Dan Danknick — Mon, 30 Sep 2013 21:50:15 GMT

Marc, can you share details about the physical devices of which you have not noticed a differance?

Thank you.

RE: iPhone4S vs. iPhone5

Marc Nicholas — Mon, 30 Sep 2013 16:56:52 GMT

Not that I've noticed.

-m