Requesting the "Desktop Site" may occasionally allow a user to pair their iPhone 5 as a linked web client, though aggressive RAM constraints on 1GB devices often result in frequent browser tab crashes. The Dangers of "Modified" WhatsApp APKs/IPAs
• and OnlineNotify tweaks for advanced presence management • Ability to hide read receipts and typing indicators • Custom themes and interface modifications • Enhanced privacy controls
You can try accessing WhatsApp via a mobile browser at web.whatsapp.com . However, modern web standards often make this difficult to load on the older Safari version included with iOS 10.3.3.