I cannot select heart rate monitor

Agus shared this problem 31 days ago
Solved

Hi.

I have an Amazfit GTR4 watch, I can sync it in Locus Classic and it works fine but I can't select it in Locus Map 4 v.4.21.1, it shows the name dimmed (see picture). This happens to me on a Xiaomi MI 9 with Android 10.

On a Xiaomi Redmi Note 8 PRO I don't have this problem, what is the reason?

Replies (3)

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Hi Agus,

how do you pair the device on LM Classic and in Xiaomi Redmi NOte 8 Pro? Is it via BT 3 or 4 or ANT+?

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Hello.
It is BT 4.
On Redmi Note 8 PRO no problem with Locus Map 4 (see image).
The error happens on MI 9 phone but only with Locus Map 4, all permissions granted.
In Locus Classic it works perfectly on MI 9.

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Is LM4 excluded from battery optimization on Mi9?

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Yes.
A BT4 temperature device is correctly connected to LM4.

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Hi Agus,


thanks for the additional info.

- LM Classic uses an obsolete system for detecting BLE sensors' status. It's more open but also more risky (it can connect also sensors that advertise themselves as non-connectable with the risk of receiving no or incorrect data)

- make sure the watch advertises itself as "connectable" - Usually, this can be determined in the Amazfit app on the phone

- Note 8 is a bit newer phone with a newer OS and MIUI platform that might accept more wearable devices for connection (but this is not verified in a test)

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Hello.
I have uninstalled and reinstalled Locus Map 4 and still the same problem.
It is very strange. I have tried with OruxMaps on MI9 and it also connects.

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Please, check the Amazfit app if the device is in "visible" or "Connectible" status.

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Is visible

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I'm sorry but this is beyond our powers. We don't own an Amazfit GTR4 nor Xiaomi Mi9 for testing this specific configuration.

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Since the Locus Map 4.22.2 update the bug has surprisingly disappeared.

Thank you for your kindness and patience.


Best regards.

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