Add info on how to scan channel backups

electrum/gui/qml/qechanneldetails.py

@@ -210,7 +210,9 @@ class QEChannelDetails(QObject, QtEventListener):
     @pyqtSlot(result=str)
     def channelBackupHelpText(self):
         return ' '.join([
-            _("Channel backups can be imported in another instance of the same wallet, by scanning this QR code."),
+            _("Channel backups can be imported in another instance of the same wallet."),
+            _("In the Electrum mobile app, use the 'Send' button to scan this QR code."),
+            '\n\n',
             _("Please note that channel backups cannot be used to restore your channels."),
             _("If you lose your wallet file, the only thing you can do with a backup is to request your channel to be closed, so that your funds will be sent on-chain."),
         ])

electrum/gui/qt/channels_list.py

@@ -173,7 +173,9 @@ class ChannelsList(MyTreeView):
 
     def export_channel_backup(self, channel_id):
         msg = ' '.join([
-            _("Channel backups can be imported in another instance of the same wallet, by scanning this QR code."),
+            _("Channel backups can be imported in another instance of the same wallet."),
+            _("In the Electrum mobile app, use the 'Send' button to scan this QR code."),
+            '\n\n',
             _("Please note that channel backups cannot be used to restore your channels."),
             _("If you lose your wallet file, the only thing you can do with a backup is to request your channel to be closed, so that your funds will be sent on-chain."),
         ])