Really , phone companies should look towards developing technologies such as the EInk Triton to make it less expensive and also more practical . Basically the Triton is a color Eink display , and how regular Eink works is that it basically moves ink capsules with rambles about how the battery only gets used when you change the display , as the capsules will just stay in place otherwise , not costing any battery life . In fact , for standard black and white eink devices such as the Kindle Paperwhite , their battery lives are measured in weeks , not hours . Hopefully in the next few decades , phones will use a better variant of this technology and we can further separate ourselves from human beings as we spend weeks indoors on our phones . s