Can't read Gatt characteristic (gatt error 15)

Question

I'm trying to read a characteristic right after gatt connected and services discovered successfully. But receives error 15 (0x0f, GATT_INSUFFICIENT_ENCRYPTION) and then 137 (0x0089) in onCharacteristicRead gatt callback. After this error gatt disconnecting immediately.

My device is Samsung S4, 4.4.2.

Are you able to read that characteristic from this peripheral successfully using some other BLE-enabled system? — Chris Stratton, Mar 21 '14 at 15:06
@ChrisStratton I can read it successfully on samsung s3 (I9300) — Konstantin Konopko, Mar 22 '14 at 16:01

score 3 · Answer 1 · edited May 23 '17 at 12:17

As far as i know both errors, "GATT_INSUFFICIENT_ENCRYPTION" and "GATT_INSUFFICIENT_AUTHENTICATION" gets occurred when you try to do a GATT operation that requires encryption. This means that you need to pair with the remote BLE device before trying to do any GATT operations, for example reading a characteristic or writing to a characteristic etc.

Have a look at the following SO link to see the different ways to pair with a BLE device.

Can't read Gatt characteristic (gatt error 15)

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