The new Infinix Hot Dragon 3 is a big upgrade to the original phone. It now has better RAM, processor and cameras.
The X-TIGI S1553 goes for only Ksh. 7500 but with that you get a massive 6000mAh battery, 720p 5.5 inch screen, 16GB internal storage, 1GB RAM and a 1.3GHz Quad Core Processor.
Cheapest 4G/LTE Phone I've seen
The Huawei Y5 Prime 2018 is here to shake the budget market at just Ksh. 10,000
For Ksh. 8500, TECNO W4 has a 5 inch HD screen, 1.3GHz Quad Core Processor, Android 6.0 Marshmallow, 8/2MP cameras, 2500mAh battery
The Nokia 2 is available starting from Ksh. 12500
Android 6.0, 1GB RAM, 1.3GHz Quad Core processor, 5MP/2MP cameras and 8GB internal memory
Safaricom Neon Pulse supports 4G/LTE networks, has a 5.0 display, 8MP/2MP cameras, 1GB RAM, 8GB internal storage, and a 2500mAh battery.
Safaricom Neon Sky supports 4G/LTE networks, features a 4.5 inch display, Qualcomm 1.2GHz Quad Core processor, 5MP front camera, 2MP back camera and a 1780 mAh battery