FAQ
TL;DR: On S7 replacements, B‑7000 can wrinkle paint; Pattex Total 50 g costs PLN 16–17 and "dries roughly in an hour." A solvent‑free adhesive helps avoid wrinkling. [Elektroda, ziom779, post #18255771]
Why it matters: This helps phone repairers stop wrinkled foil/paint and choose service‑friendly adhesives for Galaxy S7 repairs.
Quick Facts
- Pattex Total is solvent‑free, moisture‑curing; approx. 1 h set; 50 g ≈ PLN 16–17. [Elektroda, ziom779, post #18255771]
- Reported heat: 180°C on a 50–650°C gun; concern about display damage near ~300°C. [Elektroda, Marcin7dudka, post #21046732]
- Clamping: too much pressure causes ripples on S6/S7; use weaker clamps or gentler squeeze. [Elektroda, bogdan2491, post #20299378]
- Factory gaskets are very strong; poor heating or prying can wrinkle or peel paint. [Elektroda, staś pytalski, #18255712]
- Ingress point: start near the charging port; use a plastic pick with isopropanol plus hot air. [Elektroda, Vortex1987, post #21047968]
What glue should I use instead of B‑7000 on a Galaxy S7?
Use a solvent‑free option such as Pattex Total on replacement parts. It “dries roughly in an hour” and cures with ambient moisture. A 50 g tube costs about PLN 16–17. Users explored it after B‑7000 and BU LAI EN wrinkled paint on non‑original flaps. [Elektroda, ziom779, post #18255771]
Does the Galaxy S7 use glue or adhesive tapes originally?
The S7 does not come with factory liquid glue for the back. It uses adhesive tapes and gaskets. Source pre‑cut gaskets if you want OEM‑style reassembly. [Elektroda, ziom779, post #18255406]
Why does B‑7000 wrinkle the colored foil or paint on aftermarket flaps?
Users saw immediate wrinkling when B‑7000 touched non‑original flaps. Solvent content is blamed for attacking the paint or foil. Originals did not wrinkle under the same process. Black flaps were noted as having the softest paint. [Elektroda, ziom779, post #18255771]
How do I reduce ripples when using liquid glue?
Reduce clamping force. Over‑squeezing creates ripples on S6/S7 parts. Use weaker clamps or a gentler squeeze during cure. “You’re squeezing too hard” was the diagnosis when ripples increased with pressure. [Elektroda, bogdan2491, post #20299378]
What solvent should I use to unglue B‑7000?
Use isopropanol with hot air and a plastic pick. “It’s best to dig in from the bottom… dipping it in isopropanol and using hot air.” How‑To:
- Warm the edge with hot air while keeping airflow moving.
- Insert a plastic pick at the bottom, wetted with isopropanol.
- Work around the perimeter, reapplying isopropanol and heat as needed.
[Elektroda, Vortex1987, post #21047968]
What hot‑air temperature is safe when ungluing a B‑7000 display?
One user heated at 180°C and could not separate a B‑7000 screen. Their heat gun range was 50–650°C. They also cited damage risk reports near 300°C for displays. [Elektroda, Marcin7dudka, post #21046732]
Where should I start prying the S7 back cover to reduce paint damage?
Start at the bottom near the charging port. Use a plastic tool, dipped in isopropanol, plus hot air. As one tech advises: “dig in from the bottom… dipping it in isopropanol and using hot air.” [Elektroda, Vortex1987, post #21047968]
Can poor heating during teardown cause the paint to wrinkle or lift?
Yes. Factory gaskets are very strong, and bad technique can damage paint. “If it heats up badly or if it is badly undermined, the paint may start to wrinkle.” Apply heat with control and avoid rough prying. [Elektroda, staś pytalski, #18255712]
Should I reuse original adhesive gaskets or remove them?
Avoid peeling original tapes off painted flaps. The poster reported less than a 50% chance of removing tape without lifting paint. They damaged 4–5 golden flaps that way. Their workaround was cleaning adhesive with isopropanol and gluing over the gasket. [Elektroda, ziom779, post #18255771]
Is Pattex Total easier to reopen than B‑7000 later?
One user referenced a thread recommending Pattex Total as “trouble‑free to peel off.” They ordered it to test after struggling with B‑7000. [Elektroda, ziom779, post #18259293]
Will using Pattex Total make later service harder?
Consider future service. A technician warned to think about reopening a flap glued with Pattex. They suggested refining heat technique and even touch‑up paint if chipping occurs; inform customers of the risk. [Elektroda, staś pytalski, #18259089]
Why do originals not wrinkle but replacements do?
The poster saw no wrinkling on OEM flaps under the same process. On non‑original flaps, the foil wrinkled immediately upon glue contact. This happened with B‑7000 and BU LAI EN. That points to aftermarket paint or foil sensitivity. [Elektroda, ziom779, post #18255771]
Any specific caution for black S7 flaps?
Yes. The black flaps were called out as having the softest paint. Handle them gently and avoid aggressive tape removal or high clamp force. [Elektroda, ziom779, post #18255771]
