My old display had dead areas. I could not, for example, write the ‘u’ key in the virtual keyborad, or slide to respond calls because there was a dead area in the lower right of the display.
The connection was not perfect, leading to white noise and other strange screen effects. I thought it was also a display thing on the connection area (which happen to be on the lower right area too), but seems to be more of a mobile+display connection area, thus not working also with the new display, unless I keep applying gentle pressure (manually or via the adhesive pad).
The latest (keep applying pressure) is what I was not doing with the new display. I guess there’s no better solution than that, but I fear the pressure will slowly hinder the connection with time.
I recently asked about a display issue which finally was related with a problem with the connection between the display module and the FP2 itself.
It is solvable by applying pressure to the contact point. But after a month, I came to know that is its something very variable. I guess that conditions of humidity, heat, case, etc. kind of change the point, the amount and duration of pressure required to get the display working.
Sometimes it is easy: apply some pressure, then stop applying it and it works for a while. Sometimes is hard: apply pressure firmly all the time you want it to be working, try at different points, etc.
So it is too unreliable to be useful. When someone calls, I start doing pressure to see if I can pick up, missing calls, time, etc. I don’t know if anyone has any idea further than applying pressure. I tried cleaning the contacts first, but that never worked.
I’s a shame, as it’s a 400€ phone that lasted just 1 year more than my wife’s 100€ phone (5 vs 4 years). If I cannot repair it, it’s a more expensive and in the end the same electronic waste (even more, as I ordered for new components). I cannot even buy the FP2 main matrix although it’d be a huge replacement. I exhaust of arguments here for recommending FP, to my dismay.
Please, any recommendations?
Thanks a lot!
moved your post to your old thread to have the full story together.
Beside your problem, the higher price is for better working conditions and environmental sustainability not necessarily better quality. And bigger companies who sell more devices can sell for lower prices if they want.
Reg. the problem:
I think I rememeber that some contact issues could be solved, by very carefully bend up the small pins a bit, did you try that?
Thanks for merging, yes, like this is better.
I know it’s also for working conditions, etc. but to argue about its advantages with non aware or non caring people about such (super-important) things, it’s unfortunately not enough. I have it clear and probably will buy another FP if I cannot fix this one.
What do you mean by carefully bending the pins up? I think they are straight. Should I actually bend them, and in that case, how do I know the right direction and angle to do that?
I thought also to somehow wrap or solder some conductor materials to the pins might be a solution…
I meant the silber metal pins you find on the modules, that have a “nose” and are connected to the display. I don’t know what they are actually for, or if they are really for contact and I could not find the post reg this. However those are a bit flexible and could probably bend carefully a bit up to have better contact to the counterpart on the display.
But at the end I also think its more the core module and in the thread linked by Albert you will find the baking method to “solder” the core module, this can help, but also finally destroy.
Rather than applying constant pressure, did you try putting a piece of cardboard behind the case to apply the pressure? It’s also a workaround but it works a bit better and isn’t as tiring (I can confirm from a family member’s experience).
So, just to sum up, my issue is definitely a problem on the core module contacts as told by AlbertJP (see here ). It’s a long thread (>200 posts). I summarize here what I understood after a thorough reading.
It looks that it’s an issue with the fact that the core module plastic plus removable parts it’s not super-rigid, and it ends up being affected by mechanical changes due to temperature, humidity (people reporting it stops working after going to Thailand) or pressure (people reporting it happens after a flight) or physical changes (after dropping the phone). This somehow affects the connectors on the core module with the display. It is not the display connectors, but the core connectors. Myself and others replaced the display and the problem persisted.
Anyway, once the core module connectors become unstable it keeps this way for most of the people I’ve read.
I wonder if this is one of the reasons for FP3 not being as much ‘removable’ friendly anymore. I mean, it is still removable but you will need a screwer for any access, and the core seems sturdier.
Temporary mechanical solutions that work for a while (from minutes to hours to sometimes days):
Apply gentle pressure by hand, or by a cardboard/sticker on the cover. This is not adviceable as it could eventually bend the connectors. That was my case.
Remove the pressure (usually after days of applying pressure) may make it work for a while too. That also worked for me.
Bend back to vertical the connector pins, in case the pressure was not so gentle or applied for several days.
Clean the display module/core contacts. Only with 96% alcohol. Do not use contact sprays or anything else. Do it with a soft cloth, never scratch. This never worked for me anyway.
‘Twist’ the phone. Hold it at the bottom and twist the upper part a little worked for me. I only tried this after checking that the phone was a little twisted, by putting it on a table and testing that it did not rest over its four corners equally.
Clean and maybe push/bend out (towards the screen) the silver contacts (see here)
Any of these ‘mechanical’ solutions may last longer if you keep your phone away from mechanical stress:
Do not put it on leg pockets or other places where it can be ‘twisted’
Do not put it on, let’s say, backpack pockets where it can be more affected by temperature changes.
I think the internal pocket of the jacket is the perfect place, if it’s not a tight jacket.
Do not use it for long or for highly computational tasks (e.g. gaming or reading an ebook) as it may heat the board and become stressful.
I know that having so many cares can be annoying and not anyone would be happy with it.
Then, there’s the oven solution. Risky and difficult. I don’t feel confident to try this by now. Also, it seems you should not try it on an oven where you cook food (I don’t have another one). This looks like solving the problem for sure (at least, for longer) OR destroying the phone for sure.
Hope this is an accurate and summarized picture of the lore a lot of wiser people has gathered over years.
However not all core modules die due to mechanical stress. Mine is 5 years old and I work outdoor in sommer and winter in rain or sun. I carry it around in my outdoor trousers leg pocket or back pack, I flew a lot and it fell down many times.
Yes, it’s rather hit-or-miss. It appears to be a small part of the core modules that show this problem. I solved my problem by getting a second-hand FP2 with a cracked screen and swapping the core module. The “new” one is about equally old and has also been carried in trouser pockets for years but doesn’t show any display issues so far.
Yes, the #market section. You can also post in #market:search to ask for a second-hand core-module.
Otherwise you will also find some refurbished core-modules at vireo.de (don’t have a link handy) for some quite hefty price).