From 09a1bbc165d67a9febd2b72cf9551c2db864e2c1 Mon Sep 17 00:00:00 2001
From: inotia00 <108592928+inotia00@users.noreply.github.com>
Date: Mon, 25 Dec 2023 21:22:17 +0900
Subject: [PATCH] Checkin: Use null serial instead of empty
 https://github.com/microg/GmsCore/commit/ae607f166567c3c7acb423380064779ba135a677

---
 .../src/main/java/org/microg/gms/checkin/CheckinClient.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/play-services-core/src/main/java/org/microg/gms/checkin/CheckinClient.java b/play-services-core/src/main/java/org/microg/gms/checkin/CheckinClient.java
index 98598a09..84054bd2 100755
--- a/play-services-core/src/main/java/org/microg/gms/checkin/CheckinClient.java
+++ b/play-services-core/src/main/java/org/microg/gms/checkin/CheckinClient.java
@@ -137,7 +137,7 @@ public class CheckinClient {
                 .loggingId(new Random().nextLong()) // TODO: static
                 .meid(deviceIdent.meid)
                 .otaCert(Collections.singletonList("71Q6Rn2DDZl1zPDVaaeEHItd"))
-                .serial(Build.SERIAL)
+                .serial(Build.SERIAL != null && !Build.SERIAL.isEmpty() ? Build.SERIAL : null)
                 .timeZone(TimeZone.getDefault().getID())
                 .userName((String) TODO)
                 .userSerialNumber((Integer) TODO)