The LGPL includes the entire text of the GPL license, with an additional exemption for linking.
If you are unable to meet the conditions attached to the exemption, you are then governed by the terms of the GPL without the linking exemption.
The specific topic at hand is that Google and Apple app store applications cannot meet the conditions attached to the LGPL linking exception, which requires that LGPL components must be user-replaceable. So they are therefore governed by the terms of the GPL without linking exemptions.
