The 240x320 resolution is specifically designed for "Portrait" mode. Using a version meant for 320x240 (Landscape) will result in a distorted UI and unusable buttons. Memory Requirements
WhatsApp uses an end-to-end encryption protocol that has evolved significantly. Most old Java versions cannot connect to modern WhatsApp servers, resulting in "Connection Error" or "Clock out of date" messages. Screen Optimization whatsapp java 240x320 download
If the standard WhatsApp Java build fails to connect, consider these workarounds: consider these workarounds: