Or nothing here. Here's my basic criteria for Android phones today.

1. A real current Android. Say 5.1.1 or later. Without that your device can have issues like StageFright (yes I know about 2.0 of that.)
2. 1GB RAM or more.
3. 8GB memory or more.
4. For me, quadcore CPUs. For cheap, budget maybe dual core.

Hope this helps.