Both heat tobacco from the inside but by using different technologies. IQOS ORIGINALS devices contain HEATCONTROL TECHNOLOGY and use a ceramic blade, with platinum and gold tracks, that inserts into the tobacco. It is flat and wide to maximize the surface area heating the tobacco.
lil SOLID 2.0 uses induction heating with a stainless-steel pin that inserts into the tobacco.
IQOS ORIGINALS devices are designed to be used only with HEETS tobacco sticks (more than 10 flavors) while lil SOLID 2.0 is designed to be used only with Fiit tobacco sticks (basic range of 7 flavors).
IQOS ORIGINALS provide up to 6mins or 14 puffs per use or whichever comes first while lil SOLID 2.0 provides up to 5mins or 14 puffs per use or whichever comes first.
Both offer real tobacco taste without fire, smoke and ash.
Ultimately, both are smoke-free products and a better choice than continued smoking. They both are not risk free and provide nicotine which is addictive.