MLwifi400 → broken on Android 10+ (WiFi SSID, MAC access restricted). You’ll need to replace it with MLWiFi v1.42+ or switch to PhoneEvents + Network libraries.
Phone library → some methods (IMEI, SIM info, etc.) now require READ_PHONE_STATE and in Android 13+ may return blank unless the app is carrier-privileged.
File access → RandomAccessFile and file-based APIs can’t freely use /storage/emulated/0/… anymore. Use RuntimePermissions + FileProvider or store inside App-Specific folders (File.DirInternal or File.DirInternalCache).
Dialogs, IME, JavaObject, Network, Phone, PreferenceActivity, RandomAccessFile, Reflection, ScrollView2D, SQL, StringUtils → still fine with latest B4A.
MLwifi400 → obsolete, needs replacement.
PreferenceActivity → deprecated, but still works if migrated to PreferenceManager.