In my opinion (based on my continuous experience) hardly any touch smartphone is suitable for elderly person older than 70 (may be 75, it depends...).
You could try ProfileMatic, use a WLAN condition and custom action when connected.
PR1.3: Condition: "Internet connection" does not work if either "Allow background connections" is off, or "Power Saving mode" is on. This seems to be N9 platform bug.