Thanks! Finally a suggestion.

Edit:
“Ripped” from a fx “natural display” calculator’s shutdown screen (except the ® is smaller to fit)

Made wider and probably closer to the real proportions:

3310’s aspect ratio:

A rare logo so wide it only uses 13 rows!

They can! They are all licensed under CC0 (public domain dedication) and so are almost all of these

You are correct, thank you! This also shows I wasn’t imagining the different “m” I used in “blamba.de”.

Also, $42 for a font that a hacker group used widely (so it’s presumably Creative Commons)?

These are more like wallpapers (although most phones that support them also support actual wallpapers and often also “screensavers”). The boot logo can be customized on some models by flashing a modified ROM using weird cables and programs that don’t work on modern Windows. Here is a video about the 3310 specifically

Idk but they used to use the font a lot more in the 2000s. I can’t see it outside the homepage now but I found videos and magazine scans using it.

convert pot.png -filter point -resize 800%x800% pot8x.png

It’s really tiny. Here it is at 8x scale, in WEBP to save space:

convert kitty.gif -filter point -resize 800%x800% kitty.webp

Yup. This will not work on Android, iOS or “post-J2ME” feature phones. However, we still have 2G in most of Europe so the old phones can be and often are still used.

The 3310 and other 84x48 LCD models are special in that they use a non-square pixel aspect ratio, approx. 7:8. Logos in green were designed for such phones and will look vertically squished on color screens, and vice-versa.

Flood-filling with a pattern is very easy on a technical level, even Nokia 3410’s picture message editor can do that automatically. You lose half the resolution by area (pixels are basically √2 bigger on each side and in a 45° grid) to get a shade of grey. The hard part is knowing when such a sacrifice is worth it and when not (not often for a height of 14) and to guess or A/B test which phase of the pattern preserves most detail. Sometimes you want more complex dithering or even combined with an outline like the glossy FreeBSD logo.

I couldn’t fit the weirdly underlined 𝚂 in a circle so I combined the initial and logotype. Yes, probably should have omitted the 𝚜 like I did with ⓔlementary.

It’s not very clear on the website or in the talk but Blåmba normally only runs on CCC event networks. However, if you privately chat with Manawyrm she can fire up her modem on a commercial network and send you the SMS manually. Make sure to know which operator (by MCC/MNC) the logo should be assigned to, you can’t store ones for other networks.

Without bothering Manawyrm, you can also try Ringtonetools (source-available program which Blåmba uses) to convert the pic into SCKL (hex-encoded) messages that can be sent from any phone, as opposed to the binary ones that are 2x more efficient but you need to directly interface with a GSM modem for.