Crash report: ClassNotFoundException android.app.LocaleManager in Google Mobile Ads SDK 24.9.0

[Ngọc Trí Trần]

Dear Google AdMob Support Team,

*Summary
Issue: App crash when initializing/loading ads

Exception: java.lang.ClassNotFoundException: android.app.LocaleManager

Google Mobile Ads SDK version: com.google.android.gms:play-services-ads:24.9.0 (also references play-services-ads-api:24.9.0)

Impact: Occurs for some users/devices (details below)

Crash stack trace (top)
Caused by: java.lang.ClassNotFoundException: android.app.LocaleManager
com.google.android.gms.ads.internal.util.zzs.zzm(com.google.android.gms@@24.9.0:1)
com.google.android.gms.internal.ads.zzbsq.zze(com.google.android.gms@@24.9.0:2)
com.google.android.gms.internal.ads.zzbsq.zzb(com.google.android.gms@@24.9.0:1)
com.google.android.gms.ads.internal.zzf.zzc(com.google.android.gms@@24.9.0:16)
com.google.android.gms.ads.internal.zzf.zza(com.google.android.gms@@24.9.0:1)
com.google.android.gms.internal.ads.zzcpj.zzj(com.google.android.gms@@24.9.0:17)
com.google.android.gms.ads.internal.client.zzex.zzE(com.google.android.gms@@24.9.0:3)
com.google.android.gms.ads.internal.client.zzex.zzt(com.google.android.gms@@24.9.0:1)
com.google.android.gms.ads.internal.client.zzeu.run(:3)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
java.lang.Thread.run(Thread.java:923)

*What we tried
Verified we are using Google Mobile Ads SDK 24.9.0

Checked ProGuard/R8 rules (no custom shrinking rules targeting Google Ads classes)


Thank you for your support. I’m happy to provide any additional details required to help diagnose this issue.