If anyone is looking to use the Samsung Exynos 7570 chipset in the near future, they won’t need to buy separate modems to work out all of the wireless connections to the phone. That’s because all of the radios needed for LTE, Wi-Fi, Bluetooth, FM and GLONASS (for GPS) communications are embedded onto the chip.
That said, you’re not going to see this chip in top-end phones.
The four Cortex-A53 cores are built in a 14nm FinFET fabrication, but the processor itself can only essentially put out images up to 1366 x 768, record and playback full HD video and process up to 13-megapixel camera shots. That said, the LTE modem can deliver up to Category 4 speeds (150Mbps) and aggregate two carrier frequency bands.
There are the give and takes you make with an embedded modem on your chip — space allowances, radios quality, etc. Qualcomm (and Intel) may still be a go-to for the time being for big, meaty modems, but for a budget proposal like this one, this is a good step.