The 535 has a 5-inch screen versus the 430’s 4 inches, while its resolution at 540x960 compared to 480x800 is more refined. The 535 also has a 5MP front and rear camera, a quad core processor opposed to the 430’s dual core and a bigger capacity battery.
The 535 is a clumpier handset at 146g. The 430 meanwhile feels remarkably like holding a bar soap, albeit a dry bar that won’t slip from your grasp.