For the first generations of smartphones, it was hardly conceivable that a firmly bonded battery could be exchanged without any problems or that all materials could simply be recycled. Today, tesa adhesive technology is proving the opposite in around two billion of these small high-tech wonders. Smartphones were not yet invented in the 1950s, but already back then tesa stood out with smart ideas. What was good for cozy warmth thanks to sealed windows could also be useful for a more pleasant sound on the radio.

From "moll" (German for 'minor key') like tesamoll® – which already decades ago was considered an innovation in sound insulation –  to "dur" (German for 'major key') like durable in the 21^st century: The high-tech era places the greatest demands on the material structure of products. A smartphone must survive everyday strains and stresses for as long as possible, it must be shockproof, protected from internal and external overheating – and even the tiniest components must always remain safely in position. Up to 70 tesa® products may be found in a smartphone today. 

Adhesive tapes have many advantages over other mounting methods because they save weight and space and are easy to use. The innovative tesa® solutions, which were specially developed for smart devices, are wafer-thin (0.003 to 0.5 millimeters), often as fine as a single human hair. Optically clear adhesive and mounting tapes are used for the lamination of displays, while other tesa® special tapes not only bond components, but also take on additional functions such as light and heat management; they can conduct or shield electricity or absorb shocks.

Above all, however, the patented tesa® Bond & Detach® technology ensures that the little all-rounders for netsurfing, chatting, listening to music and making calls are durable, meaning that they last longer thanks to battery replacement. In the interests of sustainability, technology may help to avoid electronic waste – allowing consumers to hold back from purchasing new products at short intervals. 

All around the world, 500 product and technology developers are working on new ideas at tesa®, 75 of them in the rapidly growing Electronics sector. In the Chinese laboratory in Suzhou alone, thousands of mobile phone tests are carried out every year and new options are tested together with engineers from large industrial customers in the Customer Solution Center. For this purpose, the cell phones are sent to the "torture chamber", where they are put through their paces in 100 test procedures, that is, they are examined for their suitability for everyday use.