The Nokia C12 Pro is basically the C12 with a larger battery (4000mAh versus 3000mAh), while the C12 Plus is the C12 Pro with a different memory configuration. Have less memory and storage.
Nokia C12 Pro phones come in 2GB+64GB and 3GB+64GB configurations, but the Nokia C12 Plus comes in a single 2GB+32GB configuration with support for a microSD card slot that expandable up to 256GB of storage.
The Nokia C12 Plus, listed on the Nokia India website, is powered by an unnamed Unisoc octa-core CPU with a maximum quad clock rate of 1.6Hz. This shows that the Nokia C12 Plus uses the same chip, SC9863A1, as the standard and Pro models.
Other highlights of the Nokia C12 Plus include a 6.3-inch HD+ screen, an 8MP rear camera, a 5MP front camera and an Android 12 Go version. The smartphone features a 3.5mm headphone jack and microUSB port.
The Nokia C12 Plus is priced at Rs 7,999 in India (Note: Currently around 669 RMB), but oddly enough, the Nokia C12 Pro with more RAM (3GB) and storage (64GB) is priced at 7499 Indian rupees in Asian countries.