sam henri gold
@samhenri.gold
animal, vegetable, and mineral. product designer/engineer-er (prev @lickability.com)
dont hmu real ones know what’s up
October 10, 2025 at 4:25 PM
dont hmu real ones know what’s up
oh also in 4.0.1 they changed the height of the lower bars to be taller lmao
October 7, 2025 at 1:14 AM
oh also in 4.0.1 they changed the height of the lower bars to be taller lmao
In 4.0.1, they changed these values to be way smoother.Mapped onto a chart, you can see that it takes a lot to drop from 5 to 0 bars. It’s harder to see 5 bars, but it’s harder to plummet bars.
October 7, 2025 at 12:51 AM
In 4.0.1, they changed these values to be way smoother.Mapped onto a chart, you can see that it takes a lot to drop from 5 to 0 bars. It’s harder to see 5 bars, but it’s harder to plummet bars.
When you plot this onto a chart, you can see how the values are kinda screwed up since the values are really optimistic. Most of the time, you would see 4-5 bars. But when you gripped it, since the falloff is so sharp, you’d see a catastrophic drop from 5 to 2 bars.
October 7, 2025 at 12:51 AM
When you plot this onto a chart, you can see how the values are kinda screwed up since the values are really optimistic. Most of the time, you would see 4-5 bars. But when you gripped it, since the falloff is so sharp, you’d see a catastrophic drop from 5 to 2 bars.
...this is. This is the lookup table. When you convert the bytes to actual dBm values, you get:
-115, -111, -107, -103, and -99
(the closer to zero, the better the signal)
For example, here you need -107 or better signal to see 3 bars.
-115, -111, -107, -103, and -99
(the closer to zero, the better the signal)
For example, here you need -107 or better signal to see 3 bars.
October 7, 2025 at 12:51 AM
...this is. This is the lookup table. When you convert the bytes to actual dBm values, you get:
-115, -111, -107, -103, and -99
(the closer to zero, the better the signal)
For example, here you need -107 or better signal to see 3 bars.
-115, -111, -107, -103, and -99
(the closer to zero, the better the signal)
For example, here you need -107 or better signal to see 3 bars.
The actual calculation is dead simple. When converting signal strength to bars, CommCenter loads each threshold from memory and compares until it finds the right range.
This code is not the problem...
This code is not the problem...
![Some hideous assembly code that boils down to:
bar_count = /* initial r4 */;
while (bar_count != 5) {
if (RSSI <= threshold[bar_count]) break;
bar_count++;
}](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:duuxlq6fjlb7nqlocht6y7o6/bafkreicentfpybk4d3nkp3jsogtbnhebfgmw7gtjtbkxcej6fimukrmley@jpeg)
October 7, 2025 at 12:51 AM
The actual calculation is dead simple. When converting signal strength to bars, CommCenter loads each threshold from memory and compares until it finds the right range.
This code is not the problem...
This code is not the problem...
I downloaded both firmwares and started poking around. In the CoreTelephony framework, I found a promising looking binary: CommCenter. Looking at the strings gave me a pretty good sense that this is where the bar formula was.
October 7, 2025 at 12:51 AM
I downloaded both firmwares and started poking around. In the CoreTelephony framework, I found a promising looking binary: CommCenter. Looking at the strings gave me a pretty good sense that this is where the bar formula was.
hey wanna see something kinda interesting? this was the entire fix to the iPhone Antennagate in 2010. 20 bytes.
October 7, 2025 at 12:51 AM
hey wanna see something kinda interesting? this was the entire fix to the iPhone Antennagate in 2010. 20 bytes.
it’s with a heavy heart to inform you that i’m back on my bullshit
September 29, 2025 at 2:55 PM
it’s with a heavy heart to inform you that i’m back on my bullshit
knowledge base (+ some alt copy that I didn’t like as much)
September 29, 2025 at 1:45 PM
knowledge base (+ some alt copy that I didn’t like as much)
there’s a project that bridges Bluesky with the Twitter API v1 so you can just point an old Twitter app at the proxy and boom it’s 2011 again babyyyyy
September 26, 2025 at 9:45 PM
there’s a project that bridges Bluesky with the Twitter API v1 so you can just point an old Twitter app at the proxy and boom it’s 2011 again babyyyyy
btw this was the last time i felt joy
September 26, 2025 at 6:30 PM
btw this was the last time i felt joy
TAKEN DOWN IN THE MIDDLE OF IT?! wtf
September 25, 2025 at 11:30 PM
TAKEN DOWN IN THE MIDDLE OF IT?! wtf
it’s with a heavy heart that i must announce swag is back. this goes insanely hard. unbridled heat.
September 24, 2025 at 3:38 PM
it’s with a heavy heart that i must announce swag is back. this goes insanely hard. unbridled heat.
don’t care, didn’t ask. stg these are the most fragile people in the world
September 21, 2025 at 12:11 AM
don’t care, didn’t ask. stg these are the most fragile people in the world
right to repair folks eat your heart out
September 20, 2025 at 4:57 PM
right to repair folks eat your heart out
thinking about this dynamic today for no reason in particular
September 18, 2025 at 12:46 PM
thinking about this dynamic today for no reason in particular
cancel your preorders, the new iphones are going to explode and kill you instantly
September 13, 2025 at 5:05 AM
cancel your preorders, the new iphones are going to explode and kill you instantly
dude im dying. its the weed number. no you’re not getting it: its the number of WEED. lol. lmao. dude im pissing myself this is CRAZY ahaha damn absolutely wild lol
September 9, 2025 at 8:00 PM
dude im dying. its the weed number. no you’re not getting it: its the number of WEED. lol. lmao. dude im pissing myself this is CRAZY ahaha damn absolutely wild lol