Are Android Device ID's case sensitive?

Question

I have get my device IDs from the system all in lower case letters. Some Device ID app in PLayStore return the device IDs in upper case only. I've heard that these kind of IDs for iOS are case sensitive.

Are Android device IDs case sensitive?

I appreciate link with documentation as well.

EDIT: To be more precise, as you can see here, the device ID was read

f07a13984eed116a

is that the same device as

F07A13984EED116A ? Or is the last one another device?

Yes, they are case sensitive. But what are you using Device ID for? If it's for some kind of registration purpose may i suggest using INSTANCE ID and not Device ID. — Abhi, Dec 01 '16 at 12:35
As described in my answer it is a hex string of a long value, and therefore f07a13984f6d116a is equal to F07A13984F6D116A, but I was using ANDROID_ID, not getDeviceId(). I'll look that one up, too. — DanielB, Dec 01 '16 at 12:51

DanielB · Accepted Answer · 2016-12-01T13:08:56.123

According to the source code on line 598, the ANDROID_ID is a hexadecimal string. Thus, the case does not matter and it is case insensitive.

The documentation also states that it is a hex string.

[UPDATE]

There is another function: getDeviceId in TelephonyManager. It reads the IMEI, MEID or ESN, depending on what your phone's hardware delivers to you. The IMEI is decimal, MEID is hexadecimal, the ESN is either decimal or hexadecimal. However, only the value behind is important to distinguish devices, so it is case insensitive.

score 0 · Answer 2 · answered Dec 06 '16 at 10:32

0

"A 64-bit number (as a hex string) that is randomly generated" This is the comment in the source code.

Hex strings are NOT case-sensitive , hence it is the same device

answered Dec 06 '16 at 10:32

Shubham Goel

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Are Android Device ID's case sensitive?

2 Answers2