Sure, I'd be happy to help you suggest some phones for your friend within their budget of 12k-14k. Here are a few options:
1. Xiaomi Redmi Note 9 Pro - priced at around 12k, it has a 6.67-inch FHD+ display, Snapdragon 720G processor, 4GB RAM, and 64GB storage. It also has a large 5020mAh battery and a quad-camera setup (48MP+8MP+5MP+2MP).
2. Realme 6 - priced at around 12k, it has a 6.5-inch FHD+ display, MediaTek Helio G90T processor, 4GB RAM, and 128GB storage. It also has a large 4300mAh battery and a quad-camera setup (64MP+8MP+2MP+2MP).
3. Samsung Galaxy A21s - priced at around 13k, it has a 6.5-inch HD+ display, Exynos 850 processor, 4GB RAM, and 64GB storage. It also has a large 5000mAh battery and a quad-camera setup (48MP+8MP+2MP+2MP).
4. Vivo Y30 - priced at around 13k, it has a 6.47-inch HD+ display, MediaTek Helio P35 processor, 4GB RAM, and 128GB storage. It also has a large 5000mAh battery and a quad-camera setup (13MP+8MP+2MP+2MP).
5. OPPO A53 - priced at around 14k, it has a 6.5-inch HD+ display, Snapdragon 460 processor, 4GB RAM, and 128GB storage. It also has a large 5000mAh battery and a triple-camera setup (13MP+2MP+2MP).
All of these phones offer great value for money and should be able to handle most tasks with ease. Your friend can choose the one that suits them the best based on their personal preferences and requirements.