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Check out this article that shall may give you a better understanding:
Here is a link that has some history on RCS, but doesn’t tell the whole story:
Unfortunately, even though the three major carriers in the US have adopted it for Android phones, they are still trying to monetize it and RCS still only works within each carrier. It appears that each carrier has to partner with Google and I doubt that it is free. This is what I found on AT&T:
- How much does Advanced Messaging cost?Standard MMS and SMS rates apply based on your current AT&T rate plan. If you are on a plan that includes an unlimited number of texts, you will not incur any additional charges when you use Advanced Messaging.For capped Messaging plans or Pay-Per-Use customers, you will also be billed at your current messaging rates. But please note, if you send a message with multiple attachments with Advanced Messaging, each file you attach as well as your text will be counted and billed as individual messages.For example, if you type a text message and attach 2 photos, those would count as 3 separate messages (1 SMS and 2 MMS) for billing purposes. Files can be photos, videos, contacts, calendar items, or anything else you attach to your text message.
cpsro said:DangDave said:Many Anker and other charging adaptors do not have PD, instead they have what they call IQ which means that the voltage will not change and therefore they are limited to 5 volts and therefore 15 watts. So yes, 15 watts is better and faster than 5, 10, or 12 watts, but this is not considered fast charging.
What is PowerIQ and PD?USB Power Delivery (USB PD) is an open fast charging standard. Developed and maintained by the same group that supports USB-C. Anker’s PowerIQ 3.0 is a proprietary fast charging standard that combines USB PD and PowerIQ 2.0 into a single USB-C port
These Apple charging adapters are USB-C PD (Power Delivery). PD is the standard from the USB-IF and is what EU is mandating in their new regulations for fast charging or for charging above 15 watts. All Apple devices that include fast charging or require more than 15 watts have PD.
Many Anker and other charging adaptors do not have PD, instead they have what they call IQ which means that the voltage will not change and therefore they are limited to 5 volts and therefore 15 watts. So yes, 15 watts is better and faster than 5, 10, or 12 watts, but this is not considered fast charging.What we don’t know is how the two ports share the 35 watts when two connectors are attached? Probably port 1 max 20w, port 2 max 15w?