this post was submitted on 26 Oct 2023
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No Stupid Questions

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Delivery reports are a convenience feature that lets the sender know if the message they sent has been received (not read) by the recipient's device (for this, it has to be online and have sufficient storage space, though modern phones usually have so much storage the latter is no problem at all).

Every single phone I ever had, from early Nokias in the 00s to Androids and iPhones, had it disabled by default. While feature phones often delivered these reports with a pop-up and sometimes notification sound, which some people could deem annoying, this trend continues even with smartphones, which typically display it merely as an indicator in the chats list of your messaging application.

So, is there an actual reason why it's turned off by default everywhere? The feature has to be enabled on the sender's device to receive these and the recipient has no way of opting out of this, so it's not a privacy thing by any means.

UPD: Apparently, carriers in some countries charge customers for receiving delivery reports as if they were sent messages. I've never realized this - reports always were absolutely free where I live. Thank you for your responses!

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[–] [email protected] 31 points 1 year ago* (last edited 1 year ago) (2 children)

Text messages cost $0.10 each where I live. And it used to cost up to $0.35 each 20 years ago.

The delivery report would count as a message, thus, doubling your bill.

It was used exclusively to deliver news like death or wedding invitations. For other matters which usually need going back and forth, it was cheaper to just make a call.

Nowadays, we just use WhatsApp.

[–] [email protected] 21 points 1 year ago (4 children)

the markup on text messaging has always been northern of 99.999%. it costs them almost nothing.

[–] [email protected] 8 points 1 year ago

Even crazier is they take up almost no bandwidth because they were sent in the unused part of the control packet which was being sent anyway.

[–] [email protected] 7 points 1 year ago

This is true. When I checked on this about five years ago (in the UK), the cost per message was about £0.00001

With the reduction in the number of SMS sent, it now costs more to bill them. In the UK, even the cheapest monthly contract has unlimited calls and texts. There a pre-pay tariffs as low as £3 a month with calls, texts and some data.

[–] [email protected] -3 points 1 year ago

Sure, the marginal cost is basically nothing. Once you have invested billions in infrastructure.

Not saying 10 cents isn't outrageous, just that 0.001 cents seems low

[–] Christos 8 points 1 year ago (1 children)

Damn wtf. People still pay per text? Wack

[–] [email protected] 24 points 1 year ago (1 children)

Even though many phone plans today have unlimited texts, some still don't. A delivery report is basically a second SMS, that you then have to pay for, so I think that is why it is an opt-in feature.

[–] [email protected] 4 points 1 year ago* (last edited 1 year ago) (1 children)

Yeah, but it's an incoming SMS? Are there still any tariffs with paid incoming messages (possibly except when roaming)?

clarification: it is sent by the network, not by the recipient's handset, so they pay nothing for it

[–] [email protected] 13 points 1 year ago

Back in the day, I paid for every single received text, network provided or not. If some asshat decided to mass text me, it could easily run my phone bill up real fast.

[–] [email protected] 16 points 1 year ago

As well as the charges issue there are three other points.

They are delivery reports not read reports.

Because of the way they are implemented they are low priority on the network and will be dropped at busy times. (This means the lack of a delivery report doesn’t necessarily mean it wasn’t delivered)

They don’t work reliably across different message centres. If you and the recipient are on different message centres, You’ll get a delivery report when it reaches the next message centre. (This means that a delivery report doesn’t necessarily mean the message was delivered)

[–] [email protected] 10 points 1 year ago* (last edited 1 year ago) (2 children)

No one seems to be discussing that when a spammer learns that your number is in active use, they add it to a list and sell it to other spammers, so you get a lot more spam (particularly robo-dialing).

This is a worse problem in countries with weak anti-spam enforcement for phones (cough - USA - cough).

I'm not aware whether spammers and scammers are using these message receipts to scan across random numbers ro build their robo-dial lists, but I would be surprised if they are not doing so.

If they are not already doing it, I guarantee they're working on getting it to work for them in an affordable and convenient-to-them way.

For that reason, I keep message receipts off on my devices.

Edit: If it's really only for your incoming messages, none of the above applies. I'm not going to go look that up for a rude Internet stranger. That said, I would be wary, I've only seen this as an "opt-in" setting where if you're getting receipts, you're also sending them.

[–] [email protected] 4 points 1 year ago

Message receipts are issued by the network, turning them off only applies to messages sent by you.

[–] [email protected] 7 points 1 year ago (1 children)

privacy, maybe? I know I don't want certain people notified that I have received their text

[–] [email protected] 0 points 1 year ago (1 children)

Nope, read the last sentence.

[–] [email protected] 2 points 1 year ago (1 children)

Which is wrong. You can disable it on either end. If I disable it, I won't send out "I've seen this" messages. It is about privacy. I have mine turned off so annoying bosses can't be like "but you saw my message!" even if I was busy and couldn't do anything about it.

[–] [email protected] 3 points 1 year ago (1 children)
[–] [email protected] 1 points 1 year ago* (last edited 1 year ago)

You might be correct there. I seem to remember it being part of the MMS settings, BUT I know I can also force sms vs MMS for a conversation. I can also require both of us are encrypting(I think, been a bit since I checked).

Pixel 6 Pro, fyi. So "stock" android.

[–] [email protected] 4 points 1 year ago

Could it be that it's just not reliable on all networks in all countries?

[–] [email protected] 4 points 1 year ago* (last edited 1 year ago) (2 children)

I don't think this setting does what you think it does.

I get a check mark next to a sent text, and a double check for a delivered text, but I never turned on Get SMS delivery reports. So, this option must not control that feature. From what I can tell, with a quick Google search, it's a more detailed report that includes which towers and switches the message went through and is more intended for marketers to make sure that their spam is reaching their audience.